IRRITABLE
cranky, fractious, irritable, nettlesome, peevish, peckish, pettish, petulant, scratchy, testy, tetchy, techy
(adjective) easily irritated or annoyed; “an incorrigibly fractious young man”; “not the least nettlesome of his countrymen”
excitable, irritable
(adjective) capable of responding to stimuli
irritable
(adjective) abnormally sensitive to a stimulus
Source: WordNet® 3.1
Etymology
Adjective
irritable (comparative more irritable, superlative most irritable)
Capable of being irritated.
Easily exasperated or excited.
(medicine) Responsive to stimuli.
Synonyms
• See also irritable
Source: Wiktionary
Ir"ri*ta*ble, a. Etym: [L. irritabilis: cf. F. irritable. See
Irritate.]
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.)
Definition: Endowed with irritability; susceptible of irritation; capable
of being excited to action by the application of certain stimuli.
4. (Med.)
Definition: 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 Edition