1. Exceeding the limits of propriety or good manners; improperly forward or bold: impertinent of a child to lecture a grownup.2. Not pertinent; irrelevant. See synonyms at irrelevant.
ETYMOLOGY:
Middle English, irrelevant, from Old French, from Late Latin impertinns, impertinent- : Latin in-, not; see in–1 + Latin pertinns, pertinent; see pertinent.
m-pûr
tn-
nt
ns, impertinent- : Latin in-, not; see in–1 + Latin pertin
