'distinctively' originates from Latin, specifically the word 'distinctivus,' where 'distinct-' meant 'distinguished' and '-ivus' was a suffix forming adjectives.

'distinctivus' transformed into the Old French word 'distinctif,' and eventually became the modern English word 'distinctive' through Middle English.

Initially, it meant 'distinguished or marked,' but over time it evolved into its current meaning of 'characteristic or unique.'