Word.ws English Dictionary

undecennial

Syllables: un·de·cen·ni·al

undecennial adjective: occurring or observed every eleventh year.

Adjective

undecennial (not comparable)

  1. Occurring or observed every eleventh year.
    • undecennial festival
    • undecennial magnetic period

Questions about undecennial

What does undecennial mean?
Undecennial means occurring or observed every eleventh year.
What part of speech is undecennial?
Undecennial is an adjective.

Words near undecennial in the dictionary

  1. undecencies
  2. undecency
  3. undecene
  4. undecenes
  5. undecennary
  6. undecennial
  7. undecenoate
  8. undecenoates
  9. undecenoic acid
  10. undecenoic acids
  11. undecent

Source and license

Adapted from Wiktionary: undecennial (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “undecennial.” Word.ws, https://word.ws/undecennial. Based on Wiktionary, CC BY-SA 4.0.