1. 
[syn: temper, biliousness, irritability, peevishness, pettishness, snappishness, surliness]
The Collaborative International Dictionary of English v.0.48:
Pettish \Pet"tish\, a. [From Pet.]
   Fretful; peevish; moody; capricious; inclined to ill temper.
   "A pettish kind of humor." --Sterne. -- Pet"tish*ly, adv.
   -- Pet"tish*ness, n.
   [1913 Webster]
WordNet (r) 3.0 (2006):
pettishness
    n 1: a disposition to exhibit uncontrolled anger; "his temper
         was well known to all his employees" [syn: temper,
         biliousness, irritability, peevishness,
         pettishness, snappishness, surliness]