Webster's English Dictionary

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bilious

bil.ious \'bil-y*s\ aj [MF bilieux, fr. L biliosus, fr. bilis] 1a: of or 
   relating to bile  1b: marked by or suffering from disordered liver function 
   and esp. excessi ve secretion of bile 1c: appearing as though affected by a 
   bilious disorder  2: of a peevish ill-natured disposition : CHOLERIC  - 
   bil.ious.ly av