irritable Copy link Outline 1. irrītābĭlis, e (easily provoked; touchy)2. stŏmăchōsus (peevish, ill-tempered)3. ămārus4. īrācundus • irritable: 1. irrītābĭlis, e (easily provoked; touchy): i. temper, animus i., Cic. Att. 1, 17, 1: Hor. 2. stŏmăchōsus (peevish, ill-tempered): Hor. Ep. 1, 15, 12 (de seipso): Sen.: v. peevish. 3. ămārus: v. ill-tempered (2). 4. īrācundus: v. passionate.