septuagenarian

noun

sep·​tu·​a·​ge·​nar·​i·​an (ˌ)sep-ˌtü-ə-jə-ˈner-ē-ən How to pronounce septuagenarian (audio)
-ˌtyü-, 
-ˌchü-
Synonyms of septuagenariannext
: a person whose age is in the seventies
septuagenarian adjective

Examples of septuagenarian in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And Thomas, who is seventy-seven years old, is one of four septuagenarians on the Court. — Amy Davidson Sorkin, New Yorker, 20 Jan. 2026 The wife joined the fray, allegedly attacking another septuagenarian who tried to break up the melee after he was decked by her husband. — Charles Selle, Chicago Tribune, 23 Feb. 2026 His mother, the dancing, cursing, haggling aunt is now an arthritic septuagenarian. — Literary Hub, 10 Feb. 2026 In a way, the fact that Huston was made up of two halves — one part iconoclastic maverick, one part old school craftsman — gave him an edge his fellow septuagenarians lacked. — Jim Hemphill, IndieWire, 19 June 2026 See All Example Sentences for septuagenarian

Word History

Etymology

Late Latin septuagenarius seventy years old, from Latin, of or containing seventy, from septuageni seventy each, from septuaginta

First Known Use

1744, in the meaning defined above

Time Traveler
The first known use of septuagenarian was in 1744

Rhymes for septuagenarian

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Browse Nearby Words

Septoria
septuagenarian
septuagenary
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Cite this Entry

“Septuagenarian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/septuagenarian. Accessed 8 Jul. 2026.

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Kids Definition

septuagenarian

noun
sep·​tu·​a·​ge·​nar·​i·​an (ˌ)sep-ˌt(y)ü-ə-jə-ˈner-ē-ən How to pronounce septuagenarian (audio)
ˌsep-tə-ˌwaj-ə-
: a person who is 70 or more but less than 80 years old
septuagenarian adjective

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