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

In the sixties, artists such as Roy Lichtenstein and Peter Saul had plundered lowbrow visual culture for elemental materials. — Laura Preston, New Yorker, 30 Aug. 2026

Goldman found Koreans in their sixties save more than any other age group, retaining 37% of their income. — Mia Osmonbekov, Fortune, 30 Aug. 2026

Nearby, Americans in their sixties and seventies drunkenly solicit girls who barely look of age. — Mattha Busby, Rolling Stone, 19 Aug. 2026

Evans grew up in a deeply religious household where films produced after the sixties were forbidden. — Callum McLennan, Variety, 14 Aug. 2026

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