25B6; adjective SERENE, calm, composed, tranquil, relaxed, easy-going, mellow, unworried, untroubled, unruffled, imperturbable, placid, equable, stable, level-headed; informal unflappable, together, laid-back.
excitable.
EVEN-TEMPERED
Meaning of EVEN-TEMPERED in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012