Definition of doubtful in English:

doubtful

adjective ˈdaʊtfʊlˈdaʊtf(ə)lˈdaʊtfəl

1Feeling uncertain about something.
拿不准的，不能肯定的，疑惑的，怀疑的
he looked doubtful, but gave a nod
他看上去有点吃不准，但还是点了一下头。
I was doubtful of my judgement
我对自己的判断有怀疑。
Example sentencesExamples
- When the radio program went ‘on the air’ a few minutes later, I at once made it clear that I was highly doubtful of the claims of graphology.
- Don't manipulate the academic system on behalf of your child; it makes kids guilty and doubtful of their own ability.
- But an American official who has been privately doubtful of the Administration's commitment to the peace process now echoes this view.
- After she was told about the fierce competition in the modeling world in Jakarta, Nike, was briefly silent and seemed doubtful of her plans.
- Remember also that most people, despite their confident appearance and demeanor, are often as scared as you are and as doubtful of themselves.
- I'm very doubtful of an intervention scenario, if he truly is bipolar.
- It was clear that she was doubtful of our ability to win, as well.
- She had grown insecure and doubtful of herself.
- I'm still wavering, still feeling incredibly doubtful of the situation.
- These letters are merely intended to wreck our solidarity and create an impression that we are doubtful of our stance.
- I'm also doubtful of so many things that I previously thought were true.
- A lender doubtful of the borrower's ability to repay may take security over some or all of the company's assets.
- Lorentz wrote a paper in 1886 where he criticised Michelson's experiment and really was not worried by the experimental result which he dismissed being doubtful of its accuracy.
- I was starting to feel a little doubtful of my previous thoughts, but wasn't completely sure either way.
- When they finally arrived on the twenty-fifth floor, the couple stepped out hesitantly, doubtful of good news.
- Today's doctors, in contrast, are uncertain of their role and doubtful of their abilities and are viewed with increasing suspicion by the population.
- I was doubtful of their success, but it was worth a try.
- They are doubtful of her being reunited with Ollie, after waiting more than two weeks for his return.
- She was very doubtful of her own abilities, always had been.
- He is equally doubtful of my assertion that the modern knowledge society can go on satisfying growing human wants, including our aspiration to preserve a liveable environment.
Synonyms
irresolute, hesitant, tentative, vacillating, dithering, wavering, teetering, fluctuating, faltering, ambivalent, divided, in doubt, unsure, uncertain, in two minds, shilly-shallying, undecided, indefinite, unresolved, in a quandary/dilemma, undetermined
informal iffy, blowing hot and cold, sitting on the fence
2Not known with certainty.
可疑的，不确定的，不确知的
the fire was of doubtful origin
火源尚未查明。
Example sentencesExamples
- Certainly the sale of BT Wireless now looks doubtful.
- Yet I previously accepted as wholly certain and evident many things which I afterwards realized were doubtful.
- Upon evidence, licences will be taken from companies alleged of dealing with goods of doubtful and undeclared origin.
- This is doubtful and certainly should not be assumed.
- It was so novel a thing to undertake observations in reliance upon merely theoretical deductions; and that while much labour was certain, success appeared very doubtful.
- The cause is of doubtful origin at the moment and it's too early to say if it was arson.
- We shot him doubtful looks, certain that the country that gave the world the deep-fried pizza would be incapable of producing anything near the standard of a Mint Slice.
- Tilloid is a term used for till-like deposits of doubtful but probably non-glacial origin.
- Four substantial panels (two of doubtful origin) and the predella, or figured plinth, remain.
Synonyms
in doubt, dubious, uncertain, open to question, questionable, unsure, unconfirmed, not definite, unknown, unsettled, undecided, unresolved, debatable, open to debate, moot, in the balance, pending, in limbo, in no man's land, up in the air
confused, problematic, ambiguous
informal iffy
1. 2.1 Improbable.
  不大可能的，未必会（发生）的，未必确实的
  with clause it is doubtful whether these schemes have any lasting effect
  这些计划未必会产生持续的效果。
  Example sentencesExamples
  And many in the music industry are doubtful about whether the man dubbed ‘Wacko Jacko’ will ever regain his king of pop status.
  It is doubtful whether all the ministers or other public men and officials have been submitting mandatory annual statements of their income and assets to the government.
  It is doubtful whether future funding would allow both Cross-rail and the electrification of the Caldervale lines to be simultaneously undertaken.
  Later, when the usefulness of pretence had passed, people would be allowed to wave their children off, although it is doubtful whether this rendered the moment any less painful.
  It is doubtful whether tomorrow's victor will reach quite those lofty heights, but No Kidding is a horse with a bright future, nevertheless, and he is fancied to oblige.
  Referring to the incident, he says he enjoys the camaraderie his readers share with him, but he is doubtful whether a writer should instantly react to issues like this.
  Important though parish and town boundaries are for many reasons, it is doubtful whether occupants of vehicles are interested in where these boundaries lie.
  The fruits on my farm were ready for harvesting but I left them on the trees because it was doubtful whether they would reach the market and if the market would be open given the bandhs and processions in the city.
  It was doubtful whether the serious traveller bothered himself too much about such things as power failures, which were part of life and can happen anywhere.
  In a city where almost roadside bin is overflowing with uncleared garbage, it's extremely doubtful whether the authorities will be successful in implementation.
  Mobile's storyline is rather predictable and it's doubtful whether the show would work as a stage-bound, non-mobile monologue.
  Once again, he left the district clear in his own mind that much remained to be done; so much so that it was doubtful whether the Americans were making any progress at all.
  And it is doubtful whether the beach will ever regain its Blue Flag status unless the sewerage facility in the seaside town is brought up to standard.
  But I am very doubtful about whether the ongoing debate, in the blogs and mailing lists and conferences, is actually taking us anywhere interesting.
  It is doubtful whether our younger generation can figure them out.
  It is doubtful whether the minister's plan to find, train, equip and deploy retirees was superior to boosting the resources of the regular police to perform the same function.
  Without official status or a whopping pot of prize-money and appearance fees, it is doubtful whether this event could have been staged.
  And with school districts already pinching their pennies, it's doubtful whether they'll pony up the dough.
  But when you ask it citizens, they tend to be rather doubtful whether it is actually going to work.
  However, it is doubtful whether any privately financed development scheme would be viable.
  Synonyms
  unlikely, improbable, not likely, dubious, unthinkable, implausible, impossible, far-fetched, inconceivable, unimaginable, remote, beyond the bounds of possibility
2. 2.2 Not established as genuine or acceptable.
  未定的，未决的
  of doubtful legality
  合法性值得怀疑的。
  Example sentencesExamples
  It also did not make clear that doubtful or disputed cases should be referred to the courts.
  Though the method by which he was brought to Israel was of doubtful legality, there has been general acceptance that Israel had the right to assert jurisdiction over offences committed in Germany.
  After discounting doubtful data, C-values for 62 pteridophyte species remained acceptable for analysis.
  The streets here were painted gold; whether it was genuine was doubtful, but it was supremely glamorous.
  Controversy is an inevitable element of medical progress, but sometimes it degenerates into doubtful disputations.
  This edict was itself of doubtful legality, for it revoked an 1865 law, but was signed by the Tsar on presentation by the minister of the interior.
  The fact that the patient's consent is the crucial factor means that the practice of informing relatives of a patient's diagnosis without first seeking consent to do so is of doubtful legality.
  Synonyms
  questionable, arguable, disputable, debatable, open to question, open to debate, subject to debate, controversial, contentious, open to doubt, in doubt, dubious, borderline
  rare controvertible, unestablished
  informal iffy
  British informal dodgy

Derivatives

doubtfully

adverbˈdaʊtf(ə)li

I enjoyed the reunion with my sister and my mother, who smiled doubtfully when I promised I would resume my daily visit.
Example sentencesExamples
- She shook her head doubtfully, but smiled at me as if to say that she wouldn't be altogether unhappy if I was wrong.
- ‘Might be a bit hard with this old rusty Mazda hatchback,’ I mused doubtfully.
- ‘I don't know,’ she said doubtfully, yet again pushing damp, dust-clogged hair out of her eyes.
- She passed in front of a mirror and frowned doubtfully at the outfit she was wearing.

doubtfulness

nounˈdaʊtfʊlnəsˈdaʊtf(ə)lnəsˈdaʊtfəlnəs

I would have expected anger, doubtfulness, maybe regret, but he seemed to do it with absolutely no emotion.
Example sentencesExamples
- And he seemed to think meditation and working on this would eventually ‘make you doubt the doubtfulness.’
- Then I shook my head violently, trying to clear it of the doubtfulness that clouded it.
- The doubtfulness of it comes out, by the way, when it is noticed that this idea can make two items that are in a fundamental way absolutely identical into two different thoughts.
- ‘We're twenty-two years old, we can do this,’ Luke tried to sound bright, but Jake heard the doubtfulness in his voice.

Definition of doubtful in US English:

doubtful

adjectiveˈdaʊtfəlˈdoutfəl

1Feeling uncertain about something.
拿不准的，不能肯定的，疑惑的，怀疑的
he looked doubtful, but gave a nod
他看上去有点吃不准，但还是点了一下头。
I was doubtful of my judgment
我对自己的判断有怀疑。
Example sentencesExamples
- Lorentz wrote a paper in 1886 where he criticised Michelson's experiment and really was not worried by the experimental result which he dismissed being doubtful of its accuracy.
- I was doubtful of their success, but it was worth a try.
- He is equally doubtful of my assertion that the modern knowledge society can go on satisfying growing human wants, including our aspiration to preserve a liveable environment.
- I'm still wavering, still feeling incredibly doubtful of the situation.
- Today's doctors, in contrast, are uncertain of their role and doubtful of their abilities and are viewed with increasing suspicion by the population.
- It was clear that she was doubtful of our ability to win, as well.
- Don't manipulate the academic system on behalf of your child; it makes kids guilty and doubtful of their own ability.
- But an American official who has been privately doubtful of the Administration's commitment to the peace process now echoes this view.
- After she was told about the fierce competition in the modeling world in Jakarta, Nike, was briefly silent and seemed doubtful of her plans.
- They are doubtful of her being reunited with Ollie, after waiting more than two weeks for his return.
- I'm also doubtful of so many things that I previously thought were true.
- These letters are merely intended to wreck our solidarity and create an impression that we are doubtful of our stance.
- When the radio program went ‘on the air’ a few minutes later, I at once made it clear that I was highly doubtful of the claims of graphology.
- She had grown insecure and doubtful of herself.
- I was starting to feel a little doubtful of my previous thoughts, but wasn't completely sure either way.
- A lender doubtful of the borrower's ability to repay may take security over some or all of the company's assets.
- I'm very doubtful of an intervention scenario, if he truly is bipolar.
- Remember also that most people, despite their confident appearance and demeanor, are often as scared as you are and as doubtful of themselves.
- When they finally arrived on the twenty-fifth floor, the couple stepped out hesitantly, doubtful of good news.
- She was very doubtful of her own abilities, always had been.
Synonyms
irresolute, hesitant, tentative, vacillating, dithering, wavering, teetering, fluctuating, faltering, ambivalent, divided, in doubt, unsure, uncertain, in two minds, shilly-shallying, undecided, indefinite, unresolved, in a dilemma, in a quandary, undetermined
2Not known with certainty.
可疑的，不确定的，不确知的
the fire was of doubtful origin
火源尚未查明。
Example sentencesExamples
- Certainly the sale of BT Wireless now looks doubtful.
- Upon evidence, licences will be taken from companies alleged of dealing with goods of doubtful and undeclared origin.
- Tilloid is a term used for till-like deposits of doubtful but probably non-glacial origin.
- We shot him doubtful looks, certain that the country that gave the world the deep-fried pizza would be incapable of producing anything near the standard of a Mint Slice.
- Four substantial panels (two of doubtful origin) and the predella, or figured plinth, remain.
- This is doubtful and certainly should not be assumed.
- Yet I previously accepted as wholly certain and evident many things which I afterwards realized were doubtful.
- The cause is of doubtful origin at the moment and it's too early to say if it was arson.
- It was so novel a thing to undertake observations in reliance upon merely theoretical deductions; and that while much labour was certain, success appeared very doubtful.
Synonyms
in doubt, dubious, uncertain, open to question, questionable, unsure, unconfirmed, not definite, unknown, unsettled, undecided, unresolved, debatable, open to debate, moot, in the balance, pending, in limbo, in no man's land, up in the air
1. 2.1 Improbable.
  不大可能的，未必会（发生）的，未必确实的
  with clause it is doubtful whether these programs have any lasting effect
  这些计划未必会产生持续的效果。
  Example sentencesExamples
  Important though parish and town boundaries are for many reasons, it is doubtful whether occupants of vehicles are interested in where these boundaries lie.
  But I am very doubtful about whether the ongoing debate, in the blogs and mailing lists and conferences, is actually taking us anywhere interesting.
  But when you ask it citizens, they tend to be rather doubtful whether it is actually going to work.
  In a city where almost roadside bin is overflowing with uncleared garbage, it's extremely doubtful whether the authorities will be successful in implementation.
  It is doubtful whether our younger generation can figure them out.
  It is doubtful whether the minister's plan to find, train, equip and deploy retirees was superior to boosting the resources of the regular police to perform the same function.
  It is doubtful whether all the ministers or other public men and officials have been submitting mandatory annual statements of their income and assets to the government.
  It is doubtful whether tomorrow's victor will reach quite those lofty heights, but No Kidding is a horse with a bright future, nevertheless, and he is fancied to oblige.
  However, it is doubtful whether any privately financed development scheme would be viable.
  And with school districts already pinching their pennies, it's doubtful whether they'll pony up the dough.
  Referring to the incident, he says he enjoys the camaraderie his readers share with him, but he is doubtful whether a writer should instantly react to issues like this.
  Later, when the usefulness of pretence had passed, people would be allowed to wave their children off, although it is doubtful whether this rendered the moment any less painful.
  Without official status or a whopping pot of prize-money and appearance fees, it is doubtful whether this event could have been staged.
  And many in the music industry are doubtful about whether the man dubbed ‘Wacko Jacko’ will ever regain his king of pop status.
  Mobile's storyline is rather predictable and it's doubtful whether the show would work as a stage-bound, non-mobile monologue.
  The fruits on my farm were ready for harvesting but I left them on the trees because it was doubtful whether they would reach the market and if the market would be open given the bandhs and processions in the city.
  Once again, he left the district clear in his own mind that much remained to be done; so much so that it was doubtful whether the Americans were making any progress at all.
  And it is doubtful whether the beach will ever regain its Blue Flag status unless the sewerage facility in the seaside town is brought up to standard.
  It was doubtful whether the serious traveller bothered himself too much about such things as power failures, which were part of life and can happen anywhere.
  It is doubtful whether future funding would allow both Cross-rail and the electrification of the Caldervale lines to be simultaneously undertaken.
  Synonyms
  unlikely, improbable, not likely, dubious, unthinkable, implausible, impossible, far-fetched, inconceivable, unimaginable, remote, beyond the bounds of possibility
2. 2.2 Not established as genuine or acceptable.
  未定的，未决的
  of doubtful legality
  合法性值得怀疑的。
  Example sentencesExamples
  The streets here were painted gold; whether it was genuine was doubtful, but it was supremely glamorous.
  Controversy is an inevitable element of medical progress, but sometimes it degenerates into doubtful disputations.
  The fact that the patient's consent is the crucial factor means that the practice of informing relatives of a patient's diagnosis without first seeking consent to do so is of doubtful legality.
  Though the method by which he was brought to Israel was of doubtful legality, there has been general acceptance that Israel had the right to assert jurisdiction over offences committed in Germany.
  After discounting doubtful data, C-values for 62 pteridophyte species remained acceptable for analysis.
  It also did not make clear that doubtful or disputed cases should be referred to the courts.
  This edict was itself of doubtful legality, for it revoked an 1865 law, but was signed by the Tsar on presentation by the minister of the interior.
  Synonyms
  unlikely, improbable, not likely, dubious, unthinkable, implausible, impossible, far-fetched, inconceivable, unimaginable, remote, beyond the bounds of possibility
  questionable, arguable, disputable, debatable, open to question, open to debate, subject to debate, controversial, contentious, open to doubt, in doubt, dubious, borderline

单词	doubtful
释义	Definition of doubtful in English: doubtful adjective ˈdaʊtfʊlˈdaʊtf(ə)lˈdaʊtfəl 1Feeling uncertain about something. 拿不准的，不能肯定的，疑惑的，怀疑的 he looked doubtful, but gave a nod 他看上去有点吃不准，但还是点了一下头。 I was doubtful of my judgement 我对自己的判断有怀疑。 Example sentencesExamples When the radio program went ‘on the air’ a few minutes later, I at once made it clear that I was highly doubtful of the claims of graphology. Don't manipulate the academic system on behalf of your child; it makes kids guilty and doubtful of their own ability. But an American official who has been privately doubtful of the Administration's commitment to the peace process now echoes this view. After she was told about the fierce competition in the modeling world in Jakarta, Nike, was briefly silent and seemed doubtful of her plans. Remember also that most people, despite their confident appearance and demeanor, are often as scared as you are and as doubtful of themselves. I'm very doubtful of an intervention scenario, if he truly is bipolar. It was clear that she was doubtful of our ability to win, as well. She had grown insecure and doubtful of herself. I'm still wavering, still feeling incredibly doubtful of the situation. These letters are merely intended to wreck our solidarity and create an impression that we are doubtful of our stance. I'm also doubtful of so many things that I previously thought were true. A lender doubtful of the borrower's ability to repay may take security over some or all of the company's assets. Lorentz wrote a paper in 1886 where he criticised Michelson's experiment and really was not worried by the experimental result which he dismissed being doubtful of its accuracy. I was starting to feel a little doubtful of my previous thoughts, but wasn't completely sure either way. When they finally arrived on the twenty-fifth floor, the couple stepped out hesitantly, doubtful of good news. Today's doctors, in contrast, are uncertain of their role and doubtful of their abilities and are viewed with increasing suspicion by the population. I was doubtful of their success, but it was worth a try. They are doubtful of her being reunited with Ollie, after waiting more than two weeks for his return. She was very doubtful of her own abilities, always had been. He is equally doubtful of my assertion that the modern knowledge society can go on satisfying growing human wants, including our aspiration to preserve a liveable environment. Synonyms irresolute, hesitant, tentative, vacillating, dithering, wavering, teetering, fluctuating, faltering, ambivalent, divided, in doubt, unsure, uncertain, in two minds, shilly-shallying, undecided, indefinite, unresolved, in a quandary/dilemma, undetermined informal iffy, blowing hot and cold, sitting on the fence 2Not known with certainty. 可疑的，不确定的，不确知的 the fire was of doubtful origin 火源尚未查明。 Example sentencesExamples Certainly the sale of BT Wireless now looks doubtful. Yet I previously accepted as wholly certain and evident many things which I afterwards realized were doubtful. Upon evidence, licences will be taken from companies alleged of dealing with goods of doubtful and undeclared origin. This is doubtful and certainly should not be assumed. It was so novel a thing to undertake observations in reliance upon merely theoretical deductions; and that while much labour was certain, success appeared very doubtful. The cause is of doubtful origin at the moment and it's too early to say if it was arson. We shot him doubtful looks, certain that the country that gave the world the deep-fried pizza would be incapable of producing anything near the standard of a Mint Slice. Tilloid is a term used for till-like deposits of doubtful but probably non-glacial origin. Four substantial panels (two of doubtful origin) and the predella, or figured plinth, remain. Synonyms in doubt, dubious, uncertain, open to question, questionable, unsure, unconfirmed, not definite, unknown, unsettled, undecided, unresolved, debatable, open to debate, moot, in the balance, pending, in limbo, in no man's land, up in the air confused, problematic, ambiguous informal iffy 2.1 Improbable. 不大可能的，未必会（发生）的，未必确实的 with clause it is doubtful whether these schemes have any lasting effect 这些计划未必会产生持续的效果。 Example sentencesExamples And many in the music industry are doubtful about whether the man dubbed ‘Wacko Jacko’ will ever regain his king of pop status. It is doubtful whether all the ministers or other public men and officials have been submitting mandatory annual statements of their income and assets to the government. It is doubtful whether future funding would allow both Cross-rail and the electrification of the Caldervale lines to be simultaneously undertaken. Later, when the usefulness of pretence had passed, people would be allowed to wave their children off, although it is doubtful whether this rendered the moment any less painful. It is doubtful whether tomorrow's victor will reach quite those lofty heights, but No Kidding is a horse with a bright future, nevertheless, and he is fancied to oblige. Referring to the incident, he says he enjoys the camaraderie his readers share with him, but he is doubtful whether a writer should instantly react to issues like this. Important though parish and town boundaries are for many reasons, it is doubtful whether occupants of vehicles are interested in where these boundaries lie. The fruits on my farm were ready for harvesting but I left them on the trees because it was doubtful whether they would reach the market and if the market would be open given the bandhs and processions in the city. It was doubtful whether the serious traveller bothered himself too much about such things as power failures, which were part of life and can happen anywhere. In a city where almost roadside bin is overflowing with uncleared garbage, it's extremely doubtful whether the authorities will be successful in implementation. Mobile's storyline is rather predictable and it's doubtful whether the show would work as a stage-bound, non-mobile monologue. Once again, he left the district clear in his own mind that much remained to be done; so much so that it was doubtful whether the Americans were making any progress at all. And it is doubtful whether the beach will ever regain its Blue Flag status unless the sewerage facility in the seaside town is brought up to standard. But I am very doubtful about whether the ongoing debate, in the blogs and mailing lists and conferences, is actually taking us anywhere interesting. It is doubtful whether our younger generation can figure them out. It is doubtful whether the minister's plan to find, train, equip and deploy retirees was superior to boosting the resources of the regular police to perform the same function. Without official status or a whopping pot of prize-money and appearance fees, it is doubtful whether this event could have been staged. And with school districts already pinching their pennies, it's doubtful whether they'll pony up the dough. But when you ask it citizens, they tend to be rather doubtful whether it is actually going to work. However, it is doubtful whether any privately financed development scheme would be viable. Synonyms unlikely, improbable, not likely, dubious, unthinkable, implausible, impossible, far-fetched, inconceivable, unimaginable, remote, beyond the bounds of possibility 2.2 Not established as genuine or acceptable. 未定的，未决的 of doubtful legality 合法性值得怀疑的。 Example sentencesExamples It also did not make clear that doubtful or disputed cases should be referred to the courts. Though the method by which he was brought to Israel was of doubtful legality, there has been general acceptance that Israel had the right to assert jurisdiction over offences committed in Germany. After discounting doubtful data, C-values for 62 pteridophyte species remained acceptable for analysis. The streets here were painted gold; whether it was genuine was doubtful, but it was supremely glamorous. Controversy is an inevitable element of medical progress, but sometimes it degenerates into doubtful disputations. This edict was itself of doubtful legality, for it revoked an 1865 law, but was signed by the Tsar on presentation by the minister of the interior. The fact that the patient's consent is the crucial factor means that the practice of informing relatives of a patient's diagnosis without first seeking consent to do so is of doubtful legality. Synonyms questionable, arguable, disputable, debatable, open to question, open to debate, subject to debate, controversial, contentious, open to doubt, in doubt, dubious, borderline rare controvertible, unestablished informal iffy British informal dodgy Derivatives doubtfully adverbˈdaʊtf(ə)li I enjoyed the reunion with my sister and my mother, who smiled doubtfully when I promised I would resume my daily visit. Example sentencesExamples She shook her head doubtfully, but smiled at me as if to say that she wouldn't be altogether unhappy if I was wrong. ‘Might be a bit hard with this old rusty Mazda hatchback,’ I mused doubtfully. ‘I don't know,’ she said doubtfully, yet again pushing damp, dust-clogged hair out of her eyes. She passed in front of a mirror and frowned doubtfully at the outfit she was wearing. doubtfulness nounˈdaʊtfʊlnəsˈdaʊtf(ə)lnəsˈdaʊtfəlnəs I would have expected anger, doubtfulness, maybe regret, but he seemed to do it with absolutely no emotion. Example sentencesExamples And he seemed to think meditation and working on this would eventually ‘make you doubt the doubtfulness.’ Then I shook my head violently, trying to clear it of the doubtfulness that clouded it. The doubtfulness of it comes out, by the way, when it is noticed that this idea can make two items that are in a fundamental way absolutely identical into two different thoughts. ‘We're twenty-two years old, we can do this,’ Luke tried to sound bright, but Jake heard the doubtfulness in his voice. Definition of doubtful in US English: doubtful adjectiveˈdaʊtfəlˈdoutfəl 1Feeling uncertain about something. 拿不准的，不能肯定的，疑惑的，怀疑的 he looked doubtful, but gave a nod 他看上去有点吃不准，但还是点了一下头。 I was doubtful of my judgment 我对自己的判断有怀疑。 Example sentencesExamples Lorentz wrote a paper in 1886 where he criticised Michelson's experiment and really was not worried by the experimental result which he dismissed being doubtful of its accuracy. I was doubtful of their success, but it was worth a try. He is equally doubtful of my assertion that the modern knowledge society can go on satisfying growing human wants, including our aspiration to preserve a liveable environment. I'm still wavering, still feeling incredibly doubtful of the situation. Today's doctors, in contrast, are uncertain of their role and doubtful of their abilities and are viewed with increasing suspicion by the population. It was clear that she was doubtful of our ability to win, as well. Don't manipulate the academic system on behalf of your child; it makes kids guilty and doubtful of their own ability. But an American official who has been privately doubtful of the Administration's commitment to the peace process now echoes this view. After she was told about the fierce competition in the modeling world in Jakarta, Nike, was briefly silent and seemed doubtful of her plans. They are doubtful of her being reunited with Ollie, after waiting more than two weeks for his return. I'm also doubtful of so many things that I previously thought were true. These letters are merely intended to wreck our solidarity and create an impression that we are doubtful of our stance. When the radio program went ‘on the air’ a few minutes later, I at once made it clear that I was highly doubtful of the claims of graphology. She had grown insecure and doubtful of herself. I was starting to feel a little doubtful of my previous thoughts, but wasn't completely sure either way. A lender doubtful of the borrower's ability to repay may take security over some or all of the company's assets. I'm very doubtful of an intervention scenario, if he truly is bipolar. Remember also that most people, despite their confident appearance and demeanor, are often as scared as you are and as doubtful of themselves. When they finally arrived on the twenty-fifth floor, the couple stepped out hesitantly, doubtful of good news. She was very doubtful of her own abilities, always had been. Synonyms irresolute, hesitant, tentative, vacillating, dithering, wavering, teetering, fluctuating, faltering, ambivalent, divided, in doubt, unsure, uncertain, in two minds, shilly-shallying, undecided, indefinite, unresolved, in a dilemma, in a quandary, undetermined 2Not known with certainty. 可疑的，不确定的，不确知的 the fire was of doubtful origin 火源尚未查明。 Example sentencesExamples Certainly the sale of BT Wireless now looks doubtful. Upon evidence, licences will be taken from companies alleged of dealing with goods of doubtful and undeclared origin. Tilloid is a term used for till-like deposits of doubtful but probably non-glacial origin. We shot him doubtful looks, certain that the country that gave the world the deep-fried pizza would be incapable of producing anything near the standard of a Mint Slice. Four substantial panels (two of doubtful origin) and the predella, or figured plinth, remain. This is doubtful and certainly should not be assumed. Yet I previously accepted as wholly certain and evident many things which I afterwards realized were doubtful. The cause is of doubtful origin at the moment and it's too early to say if it was arson. It was so novel a thing to undertake observations in reliance upon merely theoretical deductions; and that while much labour was certain, success appeared very doubtful. Synonyms in doubt, dubious, uncertain, open to question, questionable, unsure, unconfirmed, not definite, unknown, unsettled, undecided, unresolved, debatable, open to debate, moot, in the balance, pending, in limbo, in no man's land, up in the air 2.1 Improbable. 不大可能的，未必会（发生）的，未必确实的 with clause it is doubtful whether these programs have any lasting effect 这些计划未必会产生持续的效果。 Example sentencesExamples Important though parish and town boundaries are for many reasons, it is doubtful whether occupants of vehicles are interested in where these boundaries lie. But I am very doubtful about whether the ongoing debate, in the blogs and mailing lists and conferences, is actually taking us anywhere interesting. But when you ask it citizens, they tend to be rather doubtful whether it is actually going to work. In a city where almost roadside bin is overflowing with uncleared garbage, it's extremely doubtful whether the authorities will be successful in implementation. It is doubtful whether our younger generation can figure them out. It is doubtful whether the minister's plan to find, train, equip and deploy retirees was superior to boosting the resources of the regular police to perform the same function. It is doubtful whether all the ministers or other public men and officials have been submitting mandatory annual statements of their income and assets to the government. It is doubtful whether tomorrow's victor will reach quite those lofty heights, but No Kidding is a horse with a bright future, nevertheless, and he is fancied to oblige. However, it is doubtful whether any privately financed development scheme would be viable. And with school districts already pinching their pennies, it's doubtful whether they'll pony up the dough. Referring to the incident, he says he enjoys the camaraderie his readers share with him, but he is doubtful whether a writer should instantly react to issues like this. Later, when the usefulness of pretence had passed, people would be allowed to wave their children off, although it is doubtful whether this rendered the moment any less painful. Without official status or a whopping pot of prize-money and appearance fees, it is doubtful whether this event could have been staged. And many in the music industry are doubtful about whether the man dubbed ‘Wacko Jacko’ will ever regain his king of pop status. Mobile's storyline is rather predictable and it's doubtful whether the show would work as a stage-bound, non-mobile monologue. The fruits on my farm were ready for harvesting but I left them on the trees because it was doubtful whether they would reach the market and if the market would be open given the bandhs and processions in the city. Once again, he left the district clear in his own mind that much remained to be done; so much so that it was doubtful whether the Americans were making any progress at all. And it is doubtful whether the beach will ever regain its Blue Flag status unless the sewerage facility in the seaside town is brought up to standard. It was doubtful whether the serious traveller bothered himself too much about such things as power failures, which were part of life and can happen anywhere. It is doubtful whether future funding would allow both Cross-rail and the electrification of the Caldervale lines to be simultaneously undertaken. Synonyms unlikely, improbable, not likely, dubious, unthinkable, implausible, impossible, far-fetched, inconceivable, unimaginable, remote, beyond the bounds of possibility 2.2 Not established as genuine or acceptable. 未定的，未决的 of doubtful legality 合法性值得怀疑的。 Example sentencesExamples The streets here were painted gold; whether it was genuine was doubtful, but it was supremely glamorous. Controversy is an inevitable element of medical progress, but sometimes it degenerates into doubtful disputations. The fact that the patient's consent is the crucial factor means that the practice of informing relatives of a patient's diagnosis without first seeking consent to do so is of doubtful legality. Though the method by which he was brought to Israel was of doubtful legality, there has been general acceptance that Israel had the right to assert jurisdiction over offences committed in Germany. After discounting doubtful data, C-values for 62 pteridophyte species remained acceptable for analysis. It also did not make clear that doubtful or disputed cases should be referred to the courts. This edict was itself of doubtful legality, for it revoked an 1865 law, but was signed by the Tsar on presentation by the minister of the interior. Synonyms unlikely, improbable, not likely, dubious, unthinkable, implausible, impossible, far-fetched, inconceivable, unimaginable, remote, beyond the bounds of possibility questionable, arguable, disputable, debatable, open to question, open to debate, subject to debate, controversial, contentious, open to doubt, in doubt, dubious, borderline
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