qualm
noun/kwɑːm/, /kwɔːm/
/kwɑːm/, /kwɔːm/
[usually plural]- qualm (about something) a feeling of doubt or worry about whether what you are doing is right
（对自己行为的）顾虑，不安 - He had been working very hard so he had no qualms about taking a few days off.
他一直辛勤工作，所以休息几天他觉得心安理得。 - They broke the law without a qualm.
他们毫无顾虑地违反了法律。
Word Originearly 16th cent. (in the sense ‘momentary sick feeling’): perhaps related to Old English cw(e)alm ‘pain’, of Germanic origin. - He had been working very hard so he had no qualms about taking a few days off.