English edit

English numbers (edit)
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9
    Cardinal: ninety
    Ordinal: ninetieth
    Adverbial: ninety times
    Multiplier: ninetyfold

Etymology edit

ninety +‎ -fold

Adjective edit

ninetyfold (not comparable)

  1. By a factor of ninety.

Adverb edit

ninetyfold (not comparable)

  1. By a factor of ninety.