/ Dictionary / Index I insouciant: Meaning and Definition of Find definitions for: in•sou•ci•ant Pronunciation: (in-s'sē-unt Fr. an-s-syän'), [key] — adj. free from concern, worry, or anxiety; carefree; nonchalant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: insouciant (Thesaurus) insouciance insoul Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language