The words collected and nonchalant can be used in similar contexts, but collected implies a concentration of mind that eliminates distractions espe...

While in some cases nearly identical to nonchalant, composed implies freedom from agitation as a result of self-discipline or a sedate disposition....

The words cool and nonchalant are synonyms, but do differ in nuance. Specifically, cool may imply calmness, deliberateness, or dispassionateness. /...

The meanings of imperturbable and nonchalant largely overlap; however, imperturbable implies coolness or assurance even under severe provocation. /...

While the synonyms unruffled and nonchalant are close in meaning, unruffled suggests apparent serenity and poise in the face of setbacks or in the...