'cosmopolitan' originates from Greek, specifically the word 'kosmopolitēs,' where 'kosmos' meant 'world' and 'politēs' meant 'citizen.'

'kosmopolitēs' transformed into the French word 'cosmopolite,' and eventually became the modern English word 'cosmopolitan' through Middle English.

Initially, it meant 'citizen of the world,' but over time it evolved into its current meaning of 'familiar with and at ease in many different countries and cultures.'