'universally-agreed' originates from the combination of 'universal' and 'agree,' where 'universal' meant 'pertaining to all' and 'agree' meant 'to have the same opinion.'

'universally-agreed' evolved from the Middle English word 'universel' and the Old French word 'agreer,' eventually becoming the modern English term 'universally-agreed.'

Initially, it meant 'agreed by all,' and this meaning has largely remained the same in modern usage.