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There are 9 twelve-letter words ending with NNIAL

bicentennialbimillennialduodecennialnonperennialquadriennialquinquennialsesquiennialtredecennialvigentennial

17 definitions found

  • bicentennial — adj. Relating to the 200th anniversary of an event or happening. — adj. Occurring every two hundred (200) years. — n. The 200th anniversary of an event or happening.
  • bimillennial — n. The 2,000th anniversary of an event or happening. — adj. Occurring every 2,000 years.
  • duodecennial — adj. Consisting of twelve years, occurring in 12-year cycles. — adj. Occurring once a duodecade, occurring every 12 years.
  • nonperennial — adj. Not perennial. — n. Any plant that is not a perennial.
  • quadriennial — adj. Alternative form of quadrennial. — n. Alternative form of quadrennial.
  • quinquennial — adj. Of or related to a five-year period. — n. A five-year period. — n. A 5th anniversary.
  • sesquiennial — adj. Occurring once every one and a half years (i.e. once every…
  • tredecennial — n. (Rare nonce word) A period of thirteen years.
  • vigentennial — adj. Relating to a period of twenty years.
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See this list for:

  • Scrabble in English: 5 words
  • French Wiktionary: no word
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: no word
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: no word

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