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Definitions

nonchalant

[non-shuh-lahnt, non-shuh-lahnt, -luhnt] / ˌnɒn ʃəˈlɑnt, ˈnɒn ʃəˌlɑnt, -lənt /
ADJECTIVE
easygoing, laid back
Synonyms
STRONGEST
aloof apathetic casual detached dispassionate effortless lackadaisical lukewarm mellow offhand unconcerned unemotional unflappable unperturbed unruffled
WEAK
airy blasé calm careless cold collected composed cool disimpassioned disinterested easy happy impassive imperturbable incurious indifferent insouciant light listless loose neglectful negligent neutral placid serene smooth trifling uncaring unexcited unfeeling unimpressible untroubled
Antonyms
STRONGEST
biased careful caring concerned deliberate emotional enthusiastic excited feeling hard interested nervous planned responsive upset worried
WEAK
intense jumpy unnerved

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Heading into the results, investors were a bit more nonchalant about threats to the economy.

From MarketWatch • Feb. 14, 2026

Mr. Mendonça Filho’s film is a nonchalant look at an utterly bonkers time and place under military dictatorship.

From The Wall Street Journal • Nov. 24, 2025

At his most nonchalant, he’s doing an Oliver impression.

From Los Angeles Times • Aug. 20, 2025

I wasn’t sure what scared me more, the thought of the tourists being attacked, or the way they were all so nonchalant in the face of danger creeping right up to them.

From Salon • Aug. 17, 2025

Rowan returned to his place next to Citra as nonchalant as could be.

From "Scythe" by Neal Shusterman

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.