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

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

Initially, it meant 'a judgment made in advance,' but over time it evolved into its current meaning of 'harmful or damaging.'