bil·ious / ˈbilyəs/ • adj. affected by or associated with nausea or vomiting: I had eaten something that didn't agree with me and I was a little bilious. ∎  (of a color) lurid or sickly: a bilious olive hue. ∎ fig. spiteful; bad-tempered: outbursts of bilious misogyny. ∎ Physiol. of or relating to bile.DERIVATIVES: bil·ious·ly adv.bil·ious·ness n.

bilious (bil-yŭs) adj.
1. containing bile.

2. a lay term used to describe attacks of nausea or vomiting.