Adjective
1. characterized by a lightly pert and exuberant quality;
"a certain irreverent gaiety and ease of manner"2. 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"3. 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"