'dally' originates from Old French, specifically the word 'dalier,' where 'dal-' meant 'to chat or talk idly.'

'dalier' transformed into the Middle English word 'dallyen,' and eventually became the modern English word 'dally.'

Initially, it meant 'to chat idly,' but over time it evolved into its current meanings of 'wasting time' and 'engaging in casual relationships.'