'conscience' originates from Latin, specifically the word 'conscientia,' where 'con-' meant 'with' and 'scientia' meant 'knowledge.'

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

Initially, it meant 'knowledge shared with oneself,' but over time it evolved into its current meaning of 'inner sense of right and wrong.'