Definition of nineties

Definition of nineties
  1. nineties Noun Plural of ninety
  2. nineties Noun The decade of the 1990s.
  3. nineties Noun The decade of the 1890s.
  4. nineties Noun The decade of one's life from age 90 through age 99.
  5. ninety Cardinal number The cardinal number occurring after eighty-nine and before ninety-one, represented in Roman numerals as XC and in Arabic numerals as 90.
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