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

Even the pioneers of the city’s experimental-dance scene in the sixties and seventies, so open-minded and self-aware in some respects, mostly forgot to think about race. —Marina Harss, New Yorker, 3 June 2026

Its ensemble includes a Brazilian-origin sensei, a young Basque-Maghrebi fighter, an African migrant in his sixties, a policewoman and a landlord antagonist. —Callum McLennan, Variety, 1 June 2026

The fact that this description calls forth the spirit of a Situationist dérive should serve as a reminder that in all this there is overlap not just with sixties counterculture broadly speaking, but rather more specifically with its avant-garde, in California groups such as the Diggers. —Literary Hub, 26 May 2026

Sometimes people compare these portrayals to the works of Russ Meyer or classic sixties and seventies cult films dealing with female sexuality. —Ryan Lattanzio, IndieWire, 5 May 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