'abrenounce' originates from Latin, specifically the word 'abrenuntiare,' where 'ab-' meant 'away' and 'renuntiare' meant 'to announce or declare.'

'abrenuntiare' transformed into the Old French word 'abrenoncier,' and eventually became the modern English word 'abrenounce' through Middle English.

Initially, it meant 'to announce away or reject formally,' and this meaning has largely remained the same in modern usage.