nonchalant

Nonchalant is an adjective used to describe a person or behavior that is casually calm, seemingly unconcerned, and not easily excited or agitated. A nonchalant demeanor conveys ease and self-possession, but it can also be read as indifference or aloofness depending on context. In everyday speech, someone may be described as nonchalant when they respond to a situation with a relaxed, almost indifferent attitude, rather than showing anxiety or enthusiasm.

Etymology and origins: The English term comes from the French nonchalant, literally “not warm” or “not warm-hearted,” formed from non- + chalant, meaning warm or heated. The sense of cool composure developed in English usage in the 19th century.

Usage and nuance: Nonchalant can describe a gesture, manner, or style, such as a nonchalant shrug or a nonchalant fashion look. In literature and media, it often marks a character who masks concern with an easygoing facade. The word carries a spectrum of connotations, from positive (effortless confidence) to negative (apparent indifference).

Related forms: Nonchalant (adj), nonchalance (noun), nonchalantly (adverb). Synonyms include casual, relaxed, insouciant, and unconcerned; antonyms include anxious, concerned, agitated, and zealous.

See also: The term is sometimes compared with blasé, which implies overfamiliar indifference, and with aloof, which suggests distance in social relations.