irreligion irrelievable • irreligionism · · · Info · Definitions · Synonyms · Characters · · irreligion · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) the quality of not being devout. Synonyms: irreligiousness. · · Noun Definition 1 Synonyms · · · irreligiousness · · Synonym 1 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072