octogenarian

noun

oc·​to·​ge·​nar·​i·​an ˌäk-tə-jə-ˈner-ē-ən 

: a person whose age is in the eighties

The octogenarian uses a cane for walking.

octogenarian adjective

Examples of octogenarian in a Sentence

Recent Examples on the Web

Dungeon makes wise use of Watt, a pop and rock Swiss Army Knife who’s increasingly in demand among rock octogenarians after his work on latter-day resurgences and returns to form for Iggy Pop, Ozzy Osbourne, Pearl Jam, and Elton John. —Craig Jenkins, Vulture, 4 June 2026

According to the probable cause statement, 59-year-old English-Wheat, who was both Prindle's caretaker and next-door neighbor, later revealed to police that the octogenarian had been dead for more than three years. —Bailey Richards, PEOPLE, 9 May 2026

That Jefferson, an ailing octogenarian, should die in his bed was unsurprising. —Daniel Immerwahr, New Yorker, 4 May 2026

As an octogenarian herself, Atomi acknowledged the need to replicate the research among an older, larger population. —Lindsey Leake, NBC news, 29 Apr. 2026

Word History

Etymology

Latin octogenarius containing eighty, from octogeni eighty each, from octoginta eighty, from octo eight + -ginta (akin to viginti twenty) — more at vigesimal

First Known Use

1815, in the meaning defined above

Rhymes for octogenarian

• antiquarian
• libertarian
• millenarian
• nonsectarian
• proletarian
• sanitarian
• trinitarian
• unitarian
• vegetarian
• veterinarian
• agrarian
• aquarian

Kids Definition

octogenarian

noun

oc·​to·​ge·​nar·​i·​an ˌäk-tə-jə-ˈner-ē-ən 

: a person whose age is between 80 and 89

Medical Definition

octogenarian

noun

oc·​to·​ge·​nar·​i·​an ˌäk-tə-jə-ˈner-ē-ən 

: a person whose age is in the eighties

octogenarian adjective