1
a
biology
: 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 (see bile sense 1a)
b
biology
: marked by or suffering from liver dysfunction and especially excessive secretion of bile
a bilious attack
a bilious patient
c
: appearing as if affected by a bilious disorder
a sickly bilious face
2
: of or indicative of a peevish ill-natured disposition
bilious commentary
her bilious humor
3
: sickeningly unpleasant
the bilious weather
with clapboards painted red and bilious yellow—Sinclair Lewis
biliously
adverb
biliousness
noun
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Merriam-Webster unabridged
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