/ ˈhetərədɒks; NAmE -dɑːks/ adjective
( formal ) not following the usual or accepted beliefs and opinions
—compare orthodox , unorthodox
► het·ero·doxy noun [ U , C ] ( pl. -ies )
••
WORD ORIGIN
early 17th cent. (originally as a noun denoting an unorthodox opinion): via late Latin from Greek heterodoxos , from heteros other + doxa opinion.