adjective of, pertaining to, or characteristic of heretics or
heresy.
Origin: 1375–1425; late Middle English <
Medieval Latin haereticālis. See
heretic,
-al1 Related forms he·ret·i·cal·ly, adverb
he·ret·i·cal·ness, noun
non·he·ret·i·cal, adjective
non·he·ret·i·cal·ly, adverb
sem·i·he·ret·i·cal, adjective
Synonyms
unorthodox, unconventional, dissident, radical.