A fighter against or opponent of heresy; someone who actively combats heretical beliefs or teachings.
From Greek 'hairesis' (heresy) plus 'machos' (fighter, battle). A rare scholarly term combining Greek elements to describe heresy opponents.
This word is so obscure that even most English dictionaries don't include it—it's the kind of term that appears in specialized theological texts but has been entirely replaced by simpler words like 'heresy-fighter' in modern usage.
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