octogenarian

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US/ˌɑktəd͡ʒɪˈnɛɹiən/UK/ˌɒktəd͡ʒɪˈnɛəɹɪən/

noun

Synonym of eightysomething: a person between 80 and 89 years old.

UncommonScrabble 15

Meanings

nounoctogenarian (plural octogenarians)

plural octogenarians

  1. Synonym of eightysomething: a person between 80 and 89 years old.

    Finsbury Park station, one of the most important L.N.E.R. suburban junctions, is now an octogenarian.

    1941 October, “Notes and News: Finsbury Park Station”, in Railway Magazine, page 466
    3 more examples

    Mama was by no means the only grandma present, for the octogenarians had turned out en masse from their huts and lean-tos and were paddling about, diving and splashing as unconcernedly as though they really belonged in the sea rather than on land.

    1929, Robert Dean Frisbee, The Book of Puka-Puka (republished by Eland, 2019; p. 75f; emphasis in original)

    To replace logarithmic tables with natural tables required some time. This seems like a modern age, yet I am not an octogenarian and I can remember the dying gasp of the logarithmic table as the standard method of computation. I have seen the desk calculator become a necessary instrument for every scientist who is doing quantitative work.

    1951, IBM Corp., Proceedings, Computation Seminar, page 13

    First up for recriminations may be President Biden. What if the octogenarian had stuck to his original suggestion that he’d be a “bridge” president – i.e., a one-termer – and announced he wouldn’t run for a second term early last year, allowing for a proper primary competition among the next generation of Democratic leaders?

    2024 November 6, Linda Feldmann, “What Trump’s historic victory says about America”, in The Christian Science Monitor

    Synonyms: eightysomething

adjectiveoctogenarian (not comparable)
  1. not comparableOf or related to eightysomethings.

    Synonyms: octogenary

Synonyms & antonyms

nounSynonym of eightysomething: a person between 80 and 89 years old.

adjectiveOf or related to eightysomethings.

Similar

More synonyms by meaning

adjectivebeing from 80 to 89 years old

Similar

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinoctōgēnus“80 each”
  2. Frenchoctogénaire
  3. Latinoctōgēnārius
  4. Englishoctogenarian

From Latin octōgēnārius + -an (suffix forming adjectives and representative nouns), either directly or via French octogénaire, from Latin octōgēnus (“80 each”) + -ārius (“-ary”), from octōgintā (“eight tens, 80”).

Full word history & related roots →

Translations

Catalan octogenari
  • octogenariOf or related to people between 80 and 89 years of age
Finnish kahdeksissakymmenissä oleva, kahdeksankymppinen
  • kahdeksissakymmenissä olevaOf or related to people between 80 and 89 years of age
  • kahdeksankymppinenOf or related to people between 80 and 89 years of age
French octogénaire
  • octogénaireOf or related to people between 80 and 89 years of age
German achtzigjährig
  • achtzigjährigOf or related to people between 80 and 89 years of age
Hebrew גְּבוּרוֹת
  • גְּבוּרוֹת (gvurót)Of or related to people between 80 and 89 years of age
Hungarian nyolcvanas (éveiben járó), nyolcvanas
  • nyolcvanas (éveiben járó)Of or related to people between 80 and 89 years of age
  • nyolcvanasOf or related to people between 80 and 89 years of age
  • nyolcvanvalahány évesOf or related to people between 80 and 89 years of age
  • nyolcvanadik születésnapját betöltöttOf or related to people between 80 and 89 years of age
Portuguese octogenário, octogenária
  • octogenárioOf or related to people between 80 and 89 years of age
  • octogenáriaOf or related to people between 80 and 89 years of age
  • oitentãoOf or related to people between 80 and 89 years of age
Cite this entry
APA

octogenarian. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/octogenarian

MLA

“octogenarian.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/octogenarian. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “octogenarian,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/octogenarian.

Source: octogenarian on Wiktionary, CC BY-SA 4.0.