Exorcist

google

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late Middle English: via ecclesiastical Latin from ecclesiastical Greek exorkismos, from exorkizein ‘exorcize’.

wiktionary

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From Middle French exorciste, from Latin exorcista, from Ancient Greek ἐξορκιστής(exorkistḗs).

etymonline

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exorcist (n.)

"one who drives out evil spirits," late 14c., from Late Latin exorcista, from Ecclesiastical Greek exorkistes "an exorcist," from exorkizein (see exorcism).