WordReference Random House Learner's Dictionary of American English © 2017
bil•ious /ˈbɪlyəs/USA pronunciation   adj. 
  1. Pathology, Physiologyof or relating to bile.
  2. sick;
    upset in the stomach:feeling bilious after drinking all night.
  3. peevish;
    cranky:the bilious old man next door.
bil•ious•ness, n. [uncountable]:[His biliousness always depressed his staff.]

WordReference Random House Unabridged Dictionary of American English © 2017
bil•ious  (bilyəs),USA pronunciation adj. 
  1. Pathology, Physiology[Physiol., Pathol.]pertaining to bile or to an excess secretion of bile.
  2. Pathologysuffering from, caused by, or attended by trouble with the bile or liver.
  3. peevish;
  4. extremely unpleasant or distasteful:a long scarf of bright, bilious green.
bilious•ly, adv. 
bilious•ness, n. 
  • Latin bīliōsus. See bile, -ous
  • 1535–45
    • 3.See corresponding entry in Unabridged grumpy, crabby, cross, grouchy, dyspeptic.

Collins Concise English Dictionary © HarperCollins Publishers::

bilious /ˈbɪlɪəs/ adj
  1. of or relating to bile
  2. affected with or denoting any disorder related to excess secretion of bile
  3. informal bad-tempered; irritable
Etymology: 16th Century: from Latin bīliōsus full of bile1

ˈbiliousness n

'bilious' also found in these entries:

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