sixty

noun

six·​ty ˈsiks-tē 

plural sixties

1

: a number that is equal to six times 10 see Table of Numbers

2

sixties plural : the numbers 60 to 69

specifically : the years 60 to 69 in a lifetime or century

sixtieth

ˈsiks-tē-əth 

adjective or noun

sixty adjective

sixty pronoun, plural in construction

sixtyish

ˈsiks-tē-ish 

adjective

Examples of sixty in a Sentence

He retired when he was in his sixties.

Recent Examples on the Web

His latest is a departure: a chronicle of his unlikely stint playing semi-pro football in Brenham, Texas, in his sixties. —Michael Schaub, Oc Register, 15 July 2025

In Bat Yam, a woman who appeared to be in her late sixties physically blocked two men — one with a small dog — from entering a shelter. —Deborah Danan, Sun Sentinel, 26 June 2025

Suzanne, a widow in her sixties, meets Osmane, a young undocumented migrant worker, one evening in Beirut. —Melanie Goodfellow, Deadline, 24 June 2025

Jaws was criticized for shepherding Hollywood out of the daring age of the late sixties and early seventies into a more impersonal multiplex age, but that’s not the film’s fault: That’s just a measure of how amazing an achievement Jaws actually was. —Tim Grierson, Vulture, 20 June 2025

Word History

Etymology

Middle English, from sixty, adjective, from Old English siextig, noun, group of sixty, from siex six + -tig group of ten; akin to Old English tīen ten

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing sixty

• sixty-fourth note
• sixty-fourth rest
• sixty-nine

Kids Definition

sixty

noun

six·​ty ˈsik-stē 

plural sixties

: a number that is equal to six times 10 see number

sixtieth

-stē-əth 

adjective or noun

sixty adjective or pronoun