A person who performs exorcism, someone who drives out evil spirits through prayer or ritual.
From exorcize + -er suffix for agent nouns. The -er ending dates back to Old English and Germanic roots, making 'exorcizer' a native English formation compared to the Latin 'exorcist.'
While 'exorcist' became the standard term, 'exorcizer' shows that English speakers naturally wanted to add their familiar -er ending (like baker, teacher, runner) to any verb, revealing how productive this suffix is across any new action.
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