'intrude' originates from Latin, specifically the word 'intrudere,' where 'in-' meant 'into' and 'trudere' meant 'to thrust.'

'intrudere' transformed into the French word 'intruder,' and eventually became the modern English word 'intrude' through Middle English.

Initially, it meant 'to thrust or push in,' but over time it evolved into its current meaning of 'entering without permission.'