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There are 8 nine-letter words containing NNIAL

BIENNIALS• biennials n. Plural of biennial.
• BIENNIAL n. something e.g. a plant occurring every two years; lasting for two years.
DECENNIAL• decennial n. The tenth anniversary of an event or happening.
• decennial adj. Occurring every ten years.
• decennial adj. Of or related to a ten-year period, as a term of office.
NOVENNIAL• novennial adj. Of or relating to a 9-year period.
• NOVENNIAL adj. recurring every ninth year.
OCTENNIAL• octennial adj. Occurring every eight years.
• octennial adj. Lasting or taking eight years.
• OCTENNIAL adj. recurring every eighth year.
PERENNIAL• perennial adj. Lasting or remaining active throughout the year, or all the time.
• perennial adj. (Figuratively).
• perennial adj. (Botany) Of a plant: active throughout the year, or having a life cycle of more than two growing seasons.
SEXENNIAL• sexennial adj. Pertaining to a period of six years; taking place once every six years.
• sexennial n. A sexennial event.
• SEXENNIAL adj. lasting six years, or happening once in six years.
TRIENNIAL• triennial adj. Happening every three years.
• triennial adj. Lasting for three years.
• triennial n. A third anniversary.
VICENNIAL• vicennial adj. Occurring once every twenty years.
• vicennial adj. Lasting for twenty years.
• VICENNIAL adj. occurring every twenty years.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 9 words
  • Scrabble in French: 1 word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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