From WordNet (r) 3.0 (2006):
impudent
adj 1: marked by casual disrespect; "a flip answer to serious
question"; "the student was kept in for impudent
behavior" [syn: impudent, insolent, snotty-nosed,
flip]
2: improperly forward or bold; "don't be fresh with me";
"impertinent of a child to lecture a grownup"; "an impudent
boy given to insulting strangers"; "Don't get wise with me!"
[syn: fresh, impertinent, impudent, overbold,
smart, saucy, sassy, wise]