disinvolture

\\ˌdisə̇nˈvälchə(r), -vȯl-, -vōl-\ noun (-s)

Etymology: French désinvolture, from Italian disinvoltura, from disinvolto unconstrained, unembarrassed (from past participle of disinvolgere to unwrap, from dis- dis- (I) — from Latin dis- — + involgere to wrap) + -ura -ure; Italian disinvolto, translation of Spanish desenvuelto

: an unconstrained free and easy manner