heterodox
adj. not in agreement with accepted beliefs; holding unorthodox opinions
Sentences
The belief that the sun is the center of our solar system was once considered heterodox, but now people know this is true.
The Catholic church considered Martin Luther's views heretical and heterodox.
Synonyms
unorthodox, unaccepted
Antonyms
orthodox, normal
SAT Vocab: Heterodoxy (n)