Open English Wordnet
Adjectives
(s)cranky, fractious, irritable, nettlesome, peevish, peckish, pettish, petulant, scratchy, testy, tetchy, techyeasily irritated or annoyed“an incorrigibly fractious young man”,
“not the least nettlesome of his countrymen” (s)irritableabnormally sensitive to a stimulus