non-issue non-ionic detergent • non-jew · · · Info · Definitions · Synonyms · Characters · · non-issue · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) the state of something that has outlived its relevance. Synonyms: dead letter. · · Noun Definition 1 Synonyms · · · dead letter · · Synonym 1 Characters · · - hyphen-minus U+002D e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 u latin small letter u U+0075