Definition of bilious adjective from the Oxford Advanced American Dictionary



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  1. 1feeling as if you might vomit soon I felt a little bilious after last night's dinner. a bilious attack
  2. 2(of colors, usually green or yellow) creating an unpleasant effect a bilious green dress
  3. 3 (formal) in a bad mood; full of anger
See the Oxford Advanced Learner's Dictionary entry: bilious