LATIN DICTIONARYLexicon Latīnum
adverb

haereticē

haereticē (comparative haereticius, superlative haereticissimē)
Classical[hae̯ˈrɛ.tɪ.keː]Ecclesiastical[eˈrɛː.ti.t͡ʃe]

Meaning

  1. EcclesiasticalLatinwith heretical opinions, heretically

haerĕtĭce, adv.,
I. v. the foll. art. I. fin.

Origins

haeretic(us) + -ē (suffix forming adverbs)

Quick answers

What does haereticē mean in Latin?
haereticē, a adverb, means “with heretical opinions, heretically”.
How do you pronounce haereticē?
In classical Latin, [hae̯ˈrɛ.tɪ.keː]; in ecclesiastical (church) Latin, [eˈrɛː.ti.t͡ʃe].