'insolence' originates from Latin, specifically the word 'insolentia,' where 'in-' meant 'not' and 'solentia' meant 'being accustomed.'

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

Initially, it meant 'unaccustomed or unusual behavior,' but over time it evolved into its current meaning of 'rude and disrespectful behavior.'