'anathematize' originates from Late Latin, specifically the word 'anathematizare,' where 'anathema' meant 'a curse' and the suffix '-ize' meant 'to make or treat in a specified way.'

'anathematizare' transformed into the Medieval French word 'anathematiser,' and eventually became the modern English word 'anathematize' through Middle English.

Initially, it meant 'to formally curse or excommunicate,' but over time it evolved into its current meaning of 'to denounce or condemn strongly.'