Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

pettish
     adj : easily irritated or annoyed; "an incorrigibly fractious
           young man"; "not the least nettlesome of his
           countrymen" [syn: {cranky}, {fractious}, {irritable}, {nettlesome},
            {peevish}, {peckish}, {petulant}, {testy}, {tetchy}, {techy}]