Main Entry: in·sou·ci·ance

Pronunciation: \in-ˈsü-sē-ən(t)s, aⁿ-süs-ˈyäⁿs\

Function: noun

Etymology: French, from in- + soucier to trouble, disturb, from Old French, from Latin sollicitare — more at solicit

Date: 1799

: lighthearted unconcern : nonchalance

— in·sou·ci·ant \in-ˈsü-sē-ənt, aⁿ-süs-yäⁿ\ adjective

— in·sou·ci·ant·ly \in-ˈsü-sē-ənt-lē\ adverb