Source : Webster's Revised Unabridged Dictionary (1913)

Biliousness \Bil"ious*ness\, n.
   The state of being bilious.

Source : WordNet®

biliousness
     n 1: gastric distress caused by a disorder of the liver or gall
          bladder
     2: a disposition to exhibit uncontrolled anger; "his temper was
        well known to all his employees" [syn: {temper}, {irritability},
         {peevishness}, {pettishness}, {snappishness}, {surliness}]