sixty

American  

[siks-tee] / ˈsɪks ti /

noun

plural

sixties

1. a cardinal number, ten times six.

2. a symbol for this number, as 60 or LX.

3. a set of this many persons or things.

4. sixties, the numbers, years, degrees, or the like, from 60 through 69, as in referring to numbered streets, indicating the years of a lifetime or of a century, or noting degrees of temperature.

   Her grandfather is in his late sixties. The temperature is in the low sixties.

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adjective

1. amounting to 60 in number.

idioms

1. like sixty, with great speed, ease, energy, or zest.

   Everyone was working like sixty to finish up before the holidays.

sixty British  

/ ˈsɪkstɪ /

noun

1. the cardinal number that is the product of ten and six See also number

2. a numeral, 60, LX, etc, representing sixty

3. something represented by, representing, or consisting of 60 units

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determiner

1. 1. amounting to sixty

      sixty soldiers

   2. ( as pronoun )

      sixty are dead

Etymology

Origin of sixty

before 900; Middle English (adj. and noun), Old English sixtig (adj.); cognate with Dutch zestig, German sechzig, Old Norse sextigir. See six, -ty ¹

Example Sentences

Real was the No. 7 U.S. brokerage company by sales volume in 2025 and Re/Max was No. 4, when including each company’s owned and franchise offices, according to real-estate consulting firm T3 Sixty.

From The Wall Street Journal • Apr. 27, 2026

Sixty miles from Julian, I turn onto Bannister Road and bump north along a gravel track for three miles into the basin, to a parking lot 164 feet below sea level.

From Los Angeles Times • Apr. 7, 2026

"Sixty percent of Russian oil goes through the Baltic, it is a lifeline."

From Barron's • Feb. 23, 2026

Sixty patients have been treated at the RVH during the trial.

From BBC • Feb. 10, 2026

Sixty percent of the two hundred young men who were recruited with him as guards were also the sons of intelligence officers.

From "Escape from Camp 14: One Man's Remarkable Odyssey from North Korea to Freedom in the West" by Blaine Harden