touchy

Synonyms: bad-tempered bundle of nerves cantankerous captious choleric crabbed cranky cross delicate dicey grouchy grumpy hazardous hypersensitive irascible irritable jumpy mean ornery oversensitive peevish perturbable pettish petulant precarious querulous quicktempered risky sensitive splenetic surly temperamental testy thin-skinned ticklish tricky unpredictable unsafe uptight volatile wired up wound up

Antonyms: calm easygoing laid-back unflappable