Octennial
Tricennial and octennial are semantically related. In some cases you can replace term "Tricennial" with "Octennial", this words are similar.
Tricennial
Octennial and tricennial are semantically related. Sometimes you can replace term "Octennial" with "Tricennial", this words are similar.
Mutual synonyms
Cite this Source
Tricennial and Octennial. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/octennial/tricennial
Octennial & Tricennial. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/octennial/tricennial>.
Tricennial or Octennial. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/octennial/tricennial.
Google Ngram Viewer shows how "octennial" and "tricennial" have occurred on timeline