From Longman Dictionary of Contemporary Englishimpertinentim‧per‧ti‧nent /ɪmˈpɜːtɪnənt $ -ɜːr-/ adjectiveRUDE/IMPOLITErude and not respectful, especially to someone who is older or more importantSYN cheekyHe was always asking impertinent questions.You are an impertinent young woman.► see thesaurus at rude —impertinently adverb —impertinence noun [uncountable]Examples from the Corpusimpertinent• Could I ask how old you are, or would that be impertinent?• an impertinent child• It would be impertinent of me to write of Zuckerman.• By now he had gotten used to reporters' impertinentquestions about his private life.• impertinent questions• I think I just asked a lot of impertinent questions.• He was impertinent, rude and arrogant.• Who was this impertinentstranger eyeing her baggage?• But at the same time they are extraordinarily willing to fill out warrantycards, questionnaires and impertinentsurveys.• And as it seems impertinent to invite you to sit down in your own laboratory, I won't.• There is no penalty for being impertinent to supervisors who, in turn, quickly learn to keep their advice to themselves.• We are too impertinent with the past, counting on it in this way for a reliablefrisson.