'expert' originates from Latin, specifically the word 'expertus,' where 'ex-' meant 'out of' and 'peritus' meant 'experienced.'

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

Initially, it meant 'experienced or tried,' but over time it evolved into its current meaning of 'a person with special knowledge or ability.'