'expertise' originates from French, specifically the word 'expertise,' where 'expert' meant 'skilled' and '-ise' was a suffix denoting action or process.

'expertise' changed from the Old French word 'expertise' and eventually became the modern English word 'expertise'.

Initially, it meant 'the action of testing or trying,' but over time it evolved into its current meaning of 'specialized knowledge or skill in a particular field'.