'leisurely' originates from Middle English, specifically the word 'leiserly,' where 'leiser' meant 'leisure.' 'Gained' comes from Old French 'gaigner,' meaning 'to earn or win.'

'leiserly' transformed into the modern English word 'leisurely,' and 'gaigner' evolved into 'gained' through Middle English.

Initially, 'leisurely' meant 'at one's own pace,' and 'gained' meant 'earned or won.' Together, they convey the idea of achieving something without haste.