'demure' originates from Old French, specifically the word 'demoure,' where 'de-' meant 'down' and 'moure' meant 'to delay or stay.'

'demoure' transformed into the Middle English word 'demure,' and eventually became the modern English word 'demure.'

Initially, it meant 'to delay or stay,' but over time it evolved into its current meaning of 'reserved and modest.'