'marketer' originates from the word 'market,' which comes from the Latin word 'mercatus,' where 'merc-' meant 'trade' or 'commerce.'

'mercatus' transformed into the Old French word 'marchié,' and eventually became the modern English word 'market' through Middle English.

Initially, it meant 'a place where trade occurs,' but over time it evolved to include the people involved in promoting and selling products.