six·​ty ˈsiks-tē How to pronounce sixty (audio)
plural sixties
: a number that is equal to six times 10 see Table of Numbers
sixties plural : the numbers 60 to 69
specifically : the years 60 to 69 in a lifetime or century
sixtieth adjective or noun
sixty adjective
sixty pronoun, plural in construction
sixtyish adjective

Example Sentences

He retired when he was in his sixties.
Recent Examples on the Web Rana was born into a New York restaurant family that has run Italian joints since the sixties, both on the East Coast and, more recently, in Phoenix. Dominic Armato, azcentral, 27 May 2020 The National Weather Service forecast calls for highs in the upper sixties with winds of 9-14 mph. Mike Rose, cleveland, 20 May 2020 Hamilton’s Holiday Auto Theatre and the Starlite Drive-In of Amelia have been around for sixty and seventy-three years, respectively. Paul Daugherty,, 14 May 2020 Building machines that can process and recognize images as accurately as a human has been, along with teaching machines to read, speak, and write our language, a holy grail of artificial-intelligence research since the early sixties. John Seabrook, The New Yorker, 9 Mar. 2020 Six Months Before the Manson Murders In the late sixties, Sharon Tate and Roman Polanski, young, newlywed, and in love, took up residence in the Chateau Marmont. Leena Kim, Town & Country, 24 May 2019 Miner is also checking up on her parents, who are in their late sixties and her grandparents., 25 Mar. 2020 In the sixties, hard-partying New York rock climbers known as the Vulgarians got laughs by ascending big cliffs while stark naked. Daniel Duane, Outside Online, 12 Apr. 2020 Highs will top out in the low sixties with cloudy skies throughout the day and overnight lows in the low 50s. Mike Rose, cleveland, 6 Apr. 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sixty.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


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

Time Traveler
The first known use of sixty was in the 14th century

Dictionary Entries Near sixty

Cite this Entry

“Sixty.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2022.

Kids Definition



six·​ty ˈsik-stē How to pronounce sixty (audio)
plural sixties
: a number that is equal to six times 10 see number
sixtieth adjective or noun
sixty adjective or pronoun

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