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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

Dimon, often more willing than most to focus on the dour side, said he was concerned about how investors appeared nonchalant about risks in credit, although he acknowledged consumer defaults looked normal so far.

From The Wall Street Journal • Oct. 15, 2025

This nonchalant style helped enable Pereira's side to play much more aggressively over the second half of the campaign.

From BBC • Aug. 13, 2025

While everyone else working the fire seemed nonchalant, I was tentative and terrified.

From Los Angeles Times • Jun. 16, 2025

Gillian noticed some of the girls looking my way, and she turned with a nonchalant grace.

From "Tradition" by Brendan Kiely

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