orthodoxy orthodoxness • orthodromic · · · Info · Definitions · Antonyms · Characters · · orthodoxy · · Text Latin · · Script 9 · · Length Definitions · · · (noun) the quality of being orthodox (especially in religion). · · Noun Definition 1 (noun) a belief or orientation agreeing with conventional standards. · · Noun Definition 2 Antonyms · · · unorthodoxy · · Antonym 0 heterodoxy · · Antonym 1 heresy · · Antonym 2 Characters · · d latin small letter d U+0064 h latin small letter h U+0068 o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 x latin small letter x U+0078 y latin small letter y U+0079