Definition: adj. contrary to or different from an acknowledged standard, a traditional form, or an established religion : unorthodox, unconventional

Etymology: Late Latin heterodoxus, from Greek heterodoxos, from heter- + doxa opinion

Quotation: “In class and in conversation, Mr. Obama talked about judges all the time, but in heterodox terms that gave no clear sense of whose work he most prized.”
- from Sunday’s New York Time article “As a Professor, Obama Held Pragmatic Views on Court”

When you’re feeling a little uppity and want to use a fancier version of “unorthodox” in a sentence, turn to “heterodox”. Lord knows I will.