'prejudge' originates from Latin, specifically the word 'praeiudicium,' where 'prae-' meant 'before' and 'iudicium' meant 'judgment.'

'praeiudicium' transformed into the Old French word 'prejugier,' and eventually became the modern English word 'prejudge' through Middle English.

Initially, it meant 'to make a judgment before knowing all the facts,' and this meaning has largely remained the same in modern usage.