"glaring shamefulness," 1610s, from French flagrance or directly from Latin flagrantia "a glow, ardor, a burning desire," abstract noun from flagrantem "burning, blazing, glowing" (see flagrant). Related: Flagrancy (1590s).
flageolet
flagitious
flagman
flagon
flagpole
flagrance
flagrant
flagship
flagstaff
flagstone
Flaherty