'proposer' originates from Old French, specifically the word 'proposer', where 'pro-' meant 'forward' and 'poser' meant 'to place'.

'proposer' changed from the Old French word 'proposer' and eventually became the modern English word 'proposer'.

Initially, it meant 'to place forward', but over time it evolved into its current meaning of 'a person who suggests or puts forward a plan or idea'.