'allegator' originates from Latin, specifically the word 'allegare,' where 'ad-' meant 'to' and 'legare' meant 'to send or dispatch.'

'allegare' transformed into the Medieval Latin word 'allegator,' and eventually became the modern English word 'allegator.'

Initially, it meant 'one who sends or dispatches,' but over time it evolved into its current meaning of 'one who alleges or makes an allegation.'