sixty

noun

six·​ty ˈsiks-tē How to pronounce sixty (audio)
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 adjective or noun
sixty adjective
sixty pronoun, plural in construction
sixtyish adjective

Examples of sixty in a Sentence

He retired when he was in his sixties.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Last month, a 49-year-old man died after losing his footing while hiking up a 60-foot waterfall on Maui, and one day later a California couple in their sixties had to be rescued by helicopter after sustaining multiple injuries attempting to hike Oahu’s off-limits Sacred Falls Trail. Jen Murphy, Outside Online, 3 Mar. 2025 The people that sit around me are mainly blokes in their fifties and sixties. Simon Johnson, The Athletic, 23 Feb. 2025 Buckley, then in his sixties, replied and accepted the offer, inviting the younger man to his home on East 73rd Street. Katherine Howell, National Review, 23 Jan. 2025 Cracks appeared in the sixties, Dunkelman thinks, as liberalism started to reflect the baby boomers’ distrust of the establishment. Benjamin Wallace-Wells, The New Yorker, 3 Mar. 2025 See All Example Sentences for sixty

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

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

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Cite this Entry

“Sixty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sixty. Accessed 23 Mar. 2025.

Kids Definition

sixty

noun
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

More from Merriam-Webster on sixty

Last Updated: - Updated example sentences
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