25B6; adjective IRRITABLE, irascible, hot-tempered, quick-tempered, snappish, fiery, touchy, volatile; cross, crabby, crotchety, cantankerous, grumpy, ill-tempered, bad-tempered, testy, tetchy, prickly, choleric; informal snappy, chippy, grouchy, cranky, on a short fuse; Brit. informal narky, ratty, eggy, like a bear with a sore head; N. Amer. informal soreheaded.
placid.