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bilious (adj.)

1540s, "pertaining to bile, biliary," from French bilieux, from Latin biliosus "pertaining to bile," from bilis "bile; peevishness" (see bile). Meaning "testy, peevish, ill-tempered" (as people afflicted with an excess of bile were believed to be) is attested from 1560s. This is the main modern sense in English and French; the more literal meaning being taken up by biliary. Related: Biliousness.

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Definitions of bilious from WordNet

bilious (adj.)
relating to or containing bile;
Synonyms: biliary
bilious (adj.)
suffering from or suggesting a liver disorder or gastric distress;
Synonyms: liverish / livery
From wordnet.princeton.edu