adj. 25B6; adjective TEMPERAMENTAL, mercurial, volatile, emotional, sensitive, highly strung, unstable, nervous, tense, edgy, twitchy, uneasy, neurotic; informal uptight, jumpy, wired.
placid.
EXCITABLE
Meaning of EXCITABLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012