holy day holyday • holy day of obligation · · · Info · Definitions · Synonyms · Characters · · holy day · · Text Common · · Latin · · Scripts 8 · · Length 3 · · Syllables Definitions · · · (noun) a day specified for religious observance. Synonyms: religious holiday, holy day. · · Noun Definition 1 Synonyms · · · religious holiday · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 h latin small letter h U+0068 l latin small letter l U+006C o latin small letter o U+006F y latin small letter y U+0079