Irascible \I*ras"ci*ble\, a. [L. irascibilis, fr. irasci to be angry, ira anger: cf. F. irascible. See Ire.]

Prone to anger; easily provoked or inflamed to anger; choleric; irritable; as, an irascible man; an irascible temper or mood. -- I*ras"ci*ble*ness, n. -- I*ras"ci*bly, adv.

Source: Webster's Revised Unabridged Dictionary (1913)