- characterized by a lightly pert and exuberant quality; "a certain irreverent gaiety and ease of manner"
- extraneous: not pertinent to the matter under consideration; "an issue extraneous to the debate"; "the price was immaterial"; "mentioned several impertinent facts before finally coming to the point"
- fresh: 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!"
- (impertinently) in an impudent or impertinent manner; "a lean, swarthy fellow was peering through the window, grinning impudently"
- (impertinence) crust: the trait of being rude and impertinent; inclined to take liberties
- (impertinence) inappropriate playfulness
- insolent, ill-mannered; irrelevant (opposite of pertinent)
- (Impertinence) Irrelevancy; the flaw of bearing no reasonable relationship to the issues or proceeding at hand.
- (impertinence) lack of proper respect or manners.
- (adj.) rude, insolent (Most of your comments are so impertinent that I don’t wish to dignify them with an answer.)