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

Californians over 70 were already able to excuse themselves from jury duty for medical reasons without documentation upon selection, but AB 1359 will allow octogenarians to do so permanently. — Terry Castleman, Los Angeles Times, 22 Sep. 2026

None of these legendary octogenarians are on tour to rehash the past. — Rob Sheffield, Rolling Stone, 17 Sep. 2026

Our age range is exactly 60 years, and the octogenarian among us is quickly revered for her remarkable fitness. — Johanna Wolfe, Robb Report, 22 Aug. 2026

After Jagger's video went viral, fans raved over the octogenarian's skills in the comments section of his post. — Ashley Hume, FOXNews.com, 11 Aug. 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