WordWeight : Weighing the Words

Pronunciation : Ir"ri*ta*ble
Part of Speech : a.
Etymology : [L. irritabilis: cf. F. irritable. See Irritate.]
Definition : 1. Capable of being irriated.

2. Very susceptible of anger or passion; easily inflamed or exasperated; as, an irritable temper. Vicious, old, and irritable. Tennyson.

3. (Physiol.)

Defn: Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.

4. (Med.)

Defn: Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.

Syn. -- Excitable; irascible; touchy; fretful; peevish.
Source : Webster's Unabridged Dictionary, 1913