Example : A flip answer to serious question.
The student was kept in for impudent behavior.

Synonyms : flip, insolent, snotty-nosed

Example : 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!.

Synonyms : fresh, impertinent, overbold, sassy, saucy, smart, wise