Heresiarch

//hɛˈɹiːzɪɑːk// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The founder of a heresy, or a major ecclesiastical proponent of such a heresy.

    "He died in 1223, and seems to have had no successor; not is it an ascertained point that more than one such hæresiarch was ever recognized."

Example

More examples

"He died in 1223, and seems to have had no successor; not is it an ascertained point that more than one such hæresiarch was ever recognized."

Etymology

Borrowed from French hérésiarque, from Ecclesiastical Latin haeresiarcha (or directly from the Latin word), from ecclesiastical Byzantine Greek αἱρεσιάρχης (hairesiárkhēs, “leader of a sect”), from Ancient Greek αἵρεσῐς (haíresĭs, “heresy”) + -ᾰ́ρχης (-ắrkhēs, “leader, ruler”), corresponding to heresy + -arch.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.