Definition of insouciance in English:

insouciance

Syllabification: in·sou·ci·ance
Pronunciation: /inˈso͞osēəns, ˌaNso͞oˈsyäNs
 
/

noun

Casual lack of concern; indifference: an impression of boyish insouciance
More example sentences
  • As what W. H. Auden called the ‘dishonest decade’ grew grimmer, the New Yorker's editorial policy shifted from insouciance to concern.
  • Wahlberg gives the same performance as in his last five movies and lacks the breezy insouciance the picture needs.
  • Releasing a fierce battle cry, I pounded flailing fist after flailing fist onto him, oblivious to his insouciance and lack of flinching.
Synonyms
nonchalance, unconcern, indifference, heedlessness, calm, equanimity, composure, ease, airiness
informal cool

Origin

late 18th century: French, from insouciant, from in- 'not' + souciant 'worrying' (present participle of soucier).

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