adjective, cheek·i·er, cheek·i·est.
- impudent; insolent: a cheeky fellow; cheeky behavior.
adjective cheekier or cheekiest
- disrespectful in speech or behaviour; impudenta cheeky child
1859, from cheek in its sense of “insolence” + -y (2). Related: Cheekily; cheekiness.