'impertinent' originates from Latin, specifically the word 'impertinens,' where 'im-' meant 'not' and 'pertinens' meant 'pertaining to.'

'impertinens' transformed into the Old French word 'impertinent,' and eventually became the modern English word 'impertinent' through Middle English.

Initially, it meant 'not pertaining to,' but over time it evolved into its current meanings of 'rude' and 'irrelevant.'