Fifteen Definition

fĭf-tēn
noun
The cardinal number between fourteen and sixteen; 15; XV.
Webster's New World
The 15th in a set or sequence.
American Heritage
Synonyms:
  • x+v
  • 15
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adjective
Totaling five more than ten.
Webster's New World
Synonyms:
  • x+v
  • 15
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Other Word Forms of Fifteen

Noun

Singular:
fifteen
Plural:
fifteens

Origin of Fifteen

  • Middle English fiftene from Old English fīftēne penkwe in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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