heretical

[huh-ret-i-kuh l]

adjective

Origin of heretical

First recorded in 1375–1425; late Middle English word from Medieval Latin word haereticālis. See heretic, -al¹

Related formshe·ret·i·cal·ly, adverbhe·ret·i·cal·ness, nounnon·he·ret·i·cal, adjectivenon·he·ret·i·cal·ly, adverbsem·i·he·ret·i·cal, adjective

unorthodox, unconventional, dissident, radical.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

He heretically calls the Isis 'a mere moat,' the Cherwell 'a ditch.'
The Life of Sir Richard Burton
Thomas Wright
Even the Bonnie Lassie, stickler though she is for the eminence of nature as an artist, heretically admits this.
Our Square and the People in It
Samuel Hopkins Adams

early 15c., from Middle French eretical and directly from Medieval Latin haereticalis, from haereticus (see heretic).