The meaning of BILIOUS is of or relating to a yellow or greenish fluid that is secreted by the liver and that aids especially in the emulsification and absorption of fats : of or relating to bile.

formal If someone is bilious, they are always in a bad mood: a bilious old man extremely unpleasant:

BILIOUS definition: relating to bile or to an excess secretion of bile. See examples of bilious used in a sentence.

Define bilious. bilious synonyms, bilious pronunciation, bilious translation, English dictionary definition of bilious. adj. 1. Of, relating to, or containing bile; biliary.

Definition of bilious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 14, 2025 · Adjective bilious (comparative more bilious, superlative most bilious) Of or pertaining to something containing or consisting of bile. Resembling bile, especially in color.

bilious, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary

It means of or relating to bile. By extension, bilious means suffering from liver dysfunction (and especially excessive secretion of bile). And, further by extension, it is indicative of a peevish ill …

If someone describes the appearance of something as bilious, they mean that they think it looks unpleasant and rather disgusting.

Characterized by irritability, ill humor, or a propensity to become easily agitated or angered. "The bilious tone of the letter made it clear the writer was angry." It is often used to describe someone who is …