[ nahyn-tee-nahyn ]

  1. a cardinal number, 90 plus 9.

  2. a symbol for this number, as 99 or XCIX.

  1. a set of this many persons or things.

  1. amounting to 99 in number.

Words Nearby ninety-nine Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use ninety-nine in a sentence

  • The Rajah repeated the same question ninety-nine times, and always received the same answer.

  • Don't frown, Anne; ninety-nine men out of a hundred would have lost theirs; and you'll say so if ever I give you the details.

    Elster's Folly | Mrs. Henry Wood
  • Out of the fourteen hundred millions of human beings who people the earth, ninety-nine one hundredths do not think.

    Urania | Camille Flammarion
  • “In ninety-nine cases out of a hundred, our forecasts would have come true,” she said.

  • Old books, in ninety-nine cases out of one hundred, are apt to prove not worth the seeking.

    The Cradle of Mankind | W.A. Wigram