incroyable
noun
in·croy·a·ble
aⁿkrwäyȧbl(ᵊ),
-b(lə)
plural -s
: a French dandy of the late 18th century : dandy, fop
Word History
Etymology
French, from incroyable, adjective, incredible, from Middle French, from in- in- entry 1 + croyable credible, from croire to believe (from Latin credere) + -able; from their extravagant dress and speech