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insouciant

[in-soo-see-uh nt; French an-soo-syahn] /ɪnˈsu si ənt; French ɛ̃ suˈsyɑ̃/
adjective
1.
free from concern, worry, or anxiety; carefree; nonchalant.
Origin
1820-1830
1820-30; < French, equivalent to in- in-3 + souciant present participle of soucier to worry < Vulgar Latin *sollicītāre, for Latin sollicitāre to disturb; see solicitous
Related forms
insouciantly, adverb
Synonyms
lighthearted, debonair, jaunty, breezy.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for insouciantly

insouciant

/ɪnˈsuːsɪənt/
adjective
1.
carefree or unconcerned; light-hearted
Derived Forms
insouciance, noun
insouciantly, adverb
Word Origin
C19: from French, from in-1 + souciant worrying, from soucier to trouble, from Latin sollicitāre; compare solicitous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for insouciantly
insouciant
1829, from Fr. insouciant, from in- "not" + souciant "caring," prp. of soucier "to care," from L. sollicitare "to agitate" (see solicit).
Online Etymology Dictionary, © 2010 Douglas Harper
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