1. (adj) cranky, fractious, irritable, nettlesome, peevish, peckish, pettish, petulant, scratchy, testy, tetchy, techy
easily irritated or annoyed
Synonyms: irritating, rough, tender, bothersome, galling, cranky, gravelly, crank, pesky, scratchy, pettish, pestiferous, pestering, abrasive, uneven, vexing, petulant, irritable, excitable, plaguey, refractory, teasing, tippy, peevish, rasping, recalcitrant, nettlesome, fractious, plaguy, tetchy, testy, spotty, techy, vexatious, raspy, peckish, annoying, grating
Antonyms: insensitive, good-natured
2. (adj) irritable
abnormally sensitive to a stimulus
Synonyms: scratchy, fractious, nettlesome, cranky, peevish, techy, petulant, pettish, tetchy, testy, excitable, peckish
Antonyms: insensitive, good-natured
3. (adj) excitable, irritable
capable of responding to stimuli
Synonyms: scratchy, fractious, nettlesome, cranky, peevish, techy, petulant, pettish, irritable, tetchy, testy, excitable, peckish
Antonyms: insensitive, good-natured
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Synonyms and Antonyms of irritable 
