adj. 1. Exceeding the limits of propriety or good manners; improperly forward or bold: scolded the impertinent child for talking rudely. 2. Not pertinent: See Synonyms at irrelevant. [Middle English, irrelevant, from Old French, from Late Latin impertinēns, impertinent- : Latin in-, not; see IN-1 + Latin pertinēns, pertinent; see PERTINENT.] im·perti·nent·ly adv. |
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