ˈbilyəs sometimes -lēəs adjective
Etymology: Middle French bilieux, from Latin biliosus, from bilis bile + -osus -ose — more at bile
1.
a. : of or relating to bile
b. : marked or accompanied by disordered liver function
a bilious attack
broadly : due to or associated with excessive secretion of bile
suffered three years with a bilious ague
c. : affected by a bilious disorder
a bilious patient
d. : appearing as though affected by a bilious disorder
a sickly bilious face
— compare jaundice
2. : of a peevish ill-natured disposition : marked by a glum and morosely sour attitude : fretfully irascible : choleric
a bilious disagreeable old skinflint
looking at life with a bilious eye
3. : sickeningly unpleasant : of a kind that makes one queasy : nauseating, revolting
utterly bilious weather
with clapboards painted red and bilious yellow — Sinclair Lewis
• bil·ious·ly adverb
• bil·ious·ness noun -es