'adorn' originates from Latin, specifically the word 'adornare,' where 'ad-' meant 'to' and 'ornare' meant 'to equip or furnish.'

'adornare' transformed into the Old French word 'aourner,' and eventually became the modern English word 'adorn' through Middle English.

Initially, it meant 'to equip or furnish,' but over time it evolved into its current meaning of 'to decorate or add beauty to something.'