nineties nineteenthly • ninetieth · · · Info · Definitions · Synonyms · Characters · · nineties · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) the decade from 1890 to 1899. Synonyms: 1890s. · · Noun Definition 1 (noun) the decade from 1990 to 1999. Synonyms: 1990s. · · Noun Definition 2 (noun) the time of life between 90 and 100. Synonyms: mid-nineties. · · Noun Definition 3 (noun) the cardinal number that is the product of ten and nine. Synonyms: ninety, 90, XC. · · Noun Definition 1 Synonyms · · · 1890s · · Synonym 1 1990s · · Synonym 2 mid-nineties · · Synonym 3 ninety · · Synonym 4 90 · · Synonym 5 xc · · Synonym 6 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074