insouciance
noun/ɪnˈsuːsiəns/
/ɪnˈsuːsiəns/
[uncountable] (formal)- the state of not being worried about anything synonym nonchalance
- She hid her worries behind an air of insouciance.
Word Originlate 18th cent.: French, from insouciant, from in- ‘not’ + souciant ‘worrying’ (present participle of soucier).Definitions on the go
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insouciance