heterodox adj. + Add to list US //ˈhɛtɝəˌdɑks// het·ero·dox SynonymsEtymology Synonyms dissidenthereticalOriginGRKἑτερόδοξος→ENheterodox From Ancient Greek ἑτερόδοξος (heteródoxos), from ἕτερος (héteros, “other, another, different”) + δόξα (dóxa, “opinion”).