Synonyms of temperamental

1 Syllable
mean
2 Syllables
willful, fickle, wiggly, headstrong, touchy, hyper, cussed, fiery, froward, touchier, fickler, ticklish, touchiest, high-strung
3 Syllables
mercurial, volcanic, erratic, unstable, variable, contemptuous, capricious, tottery, neurotic, petulant, tottering, hotheaded, thin-skinned, impatient, ornery, changeable, vagarious, uncertain
4 Syllables
unreliable, ill-natured, volatile, explosive, sensitive, emotional, irritable, passionate, quick-tempered, excitable, unequable, tempersome, humorsome, inconsistent
5 Syllables
unpredictable, undependable
6 Syllables
hypersensitive