adj. 25B6; adjective CALM, cool, self-possessed, self-controlled, composed, poised; serene, tranquil, relaxed, unruffled, unperturbed, untroubled; placid, quiet, sedate, phlegmatic; informal unfazed, together, laid-back.
excited, hysterical.
COLLECTED
Meaning of COLLECTED in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012