'indulgence' originates from Latin, specifically the word 'indulgentia,' where 'indulgere' meant 'to be kind or lenient.'

'indulgentia' transformed into the Old French word 'indulgence,' and eventually became the modern English word 'indulgence' through Middle English.

Initially, it meant 'to be kind or lenient,' but over time it evolved into its current meaning of 'remission of punishment or leniency.'