'anathematizer' originates from English, specifically from the verb 'anathematize,' which itself comes from Late Latin 'anathematizare,' where 'anathema' meant 'a formal curse.'

'anathematizer' was formed in English by adding the agentive suffix '-er' to 'anathematize,' which came from Late Latin 'anathematizare,' and ultimately from Greek 'anathematizein.'

Initially, it meant 'one who pronounces a curse,' and this meaning has remained consistent in modern usage.