of, pertaining to, or characterized by impertinence or effrontery: The student was kept late for impudent behavior.
2.
Obsolete. shameless or brazenly immodest.
Origin: 1350–1400;Middle English < Latinimpudent- (stem of impudēns) shameless, equivalent to im-im-2 + pud- (base of pudēre to feel shame; cf. pudendum) + -ent--ent