septuagenarian

noun

sep·​tu·​a·​ge·​nar·​i·​an (ˌ)sep-ˌtü-ə-jə-ˈner-ē-ən 

-ˌtyü-, 

-ˌchü-

: a person whose age is in the seventies

septuagenarian adjective

Examples of septuagenarian in a Sentence

Recent Examples on the Web

My life flashed before my eyes, settling finally on my most recent memories, from the day before at Mount Rose, with its friendly septuagenarians. —Blair Braverman, Outside, 11 Mar. 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

More than 70 percent of its audience was female and 72 percent of all ticket buyers were septuagenarians as conservative grassroots groups hoped to send fans of the President to movie theaters to back the film. —Erik Hayden, HollywoodReporter, 4 Feb. 2026

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

Rhymes for septuagenarian

• latitudinarian
• agrarian
• aquarian
• barbarian
• bavarian
• bulgarian
• cimmerian
• hungarian
• librarian
• ovarian
• riparian
• rotarian

Kids Definition

septuagenarian

noun

sep·​tu·​a·​ge·​nar·​i·​an (ˌ)sep-ˌt(y)ü-ə-jə-ˈner-ē-ən 

ˌsep-tə-ˌwaj-ə-

: a person who is 70 or more but less than 80 years old

septuagenarian adjective