rue·ful
adjective/ˈruːfl/
/ˈruːfl/
- feeling or showing that you are sad or sorry
悲伤的；懊悔的；沮丧的 - a rueful smile
惨然一笑
Oxford Collocations DictionaryRueful is used with these nouns:- grin
- laugh
- smile
- …
Word OriginMiddle English (also in the sense ‘pitiable’): from the noun rue ‘regret’ + -ful. - a rueful smile