adj. 25B6; adjective CALM, composed, unconcerned, cool, {cool, calm, and collected}, cool as a cucumber; indifferent, blasé, dispassionate, apathetic, casual, insouciant; informal laid-back.
anxious.
NONCHALANT
Meaning of NONCHALANT in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012