English

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English numbers (edit)
 ←  17 18 19  → 
    Cardinal: eighteen
    Ordinal: eighteenth
    Adverbial: eighteen times
    Multiplier: eighteenfold
    Group collective: eighteensome

Etymology

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From Middle English eiʒtenþe, from Old English eahtatēoþa, from Proto-Germanic *ahtudô tehundô.

Pronunciation

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  • IPA(key): /ˌeɪˈtiːnθ/
  • Audio (US):(file)
  • Rhymes: -iːnθ
  • Hyphenation: eigh‧teenth

Adjective

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eighteenth

  1. The ordinal form of the number eighteen.

Synonyms

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Derived terms

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Translations

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Noun

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eighteenth (plural eighteenths)

  1. The person or thing in the eighteenth position.
  2. One of eighteen equal parts of a whole.
  3. (informal) A party to celebrate an eighteenth birthday.

Synonyms

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Translations

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