holy day of obligation holy day • holy eucharist · · · Info · Definitions · Characters · · holy day of obligation · · Text Common · · Latin · · Scripts 22 · · Length 8 · · Syllables Definitions · · · (noun) a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion. Synonyms: holy day of obligation. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 f latin small letter f U+0066 g latin small letter g U+0067 h latin small letter h U+0068 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 t latin small letter t U+0074 y latin small letter y U+0079