Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
antiheretical is an adjective meaning "opposed to heresy". It carries one recorded sense.
opposed to heresy
Definitions, synonyms and semantic relations for antiheretical come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.