'barbarise' originates from Old French, specifically the word 'barbariser', which in turn comes from Late Latin 'barbarizare', ultimately from Greek 'barbaros', where 'barbar-' meant 'foreign, strange'.

'barbarise' changed from Old French word 'barbariser' (from Late Latin 'barbarizare' and Greek 'barbaros') and eventually became the modern English word 'barbarise'.

Initially, it meant 'foreign/strange' (applied to speech or peoples), but over time it evolved into the current meaning of 'to make barbaric or uncivilized'.