'assent' originates from Latin, specifically the word 'assentire,' where 'ad-' meant 'toward' and 'sentire' meant 'to feel or think.'

'assentire' transformed into the Old French word 'assenter,' and eventually became the modern English word 'assent' through Middle English.

Initially, it meant 'to feel or think toward something,' but over time it evolved into its current meaning of 'to agree or approve.'