heresimach

noun

he·​re·​si·​mach

həˈrēzəˌmak,

heˈ-,

-rēsə-;

ˈherəsēˌ-

plural -s

: an active opponent of heresy and heretics

Word History

Etymology

Late Greek hairesimachos, from hairesis heresy + Greek -machos (from machesthai to fight)

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