List of 426 Sets of Synonyms - How they Differ - Total of 2307 Words - 90

SYNONYMS: cool, composed, collected, unruffled, nonchalant, imperturbable, detached.
These adjectives apply to persons, their attitudes, their behavior, or their actions to indicate absence of excitement or discomposure, especially in times of stress.

Cool usually implies merely a high degree of self-control, though it may also indicate aloofness: Keep strong, if possible. In any case, keep cool. An honest hater is often a better fellow than a cool friend.
Composed. implies a serene, often sedate quality arising from self-discipline: The performer was composed as she began her performance
Collected suggests self-possessed composure: The witness remained collected throughout the cross-examination.
Unruffled emphasizes calm despite circumstances that might elicit agitation: He had a contented mind and unruffled spirit.
Nonchalant describes a casual manner that may suggest, sometimes misleadingly, a lack of interest or concern: He doesn't seem excited, his demeanor is easy and nonchalant.
Imperturbable stresses unshakable calmness considered usually as an inherent trait rather than as a product of self-discipline: He was a man, cool, and quite English, imperturbable.
Detached implies aloofness resulting either from lack of active concern or from resistance to emotional involvement: She may be detached, but at least she's not hypocritically effusive.