sixty

American  

[siks-tee] / ˈsɪks ti /

noun

sixties plural

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

Other Word Forms

Noun Inflected Forms

• sixties
  plural

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

Sixty years ago, the rival NFL and AFL announced a merger.

From The Wall Street Journal • Jun. 7, 2026

Sixty years ago, the rival NFL and AFL announced a merger.

From The Wall Street Journal • Jun. 7, 2026

Sixty cans of chicken noodle soup on a road trip?

From Los Angeles Times • May 27, 2026

Sixty miles away in Von Ormy, two truck stops make up a significant part of the city’s revenue.

From Salon • May 3, 2026

Sixty years, forty, even, is as much as anybody feels like being bothered with.

From "Jazz" by Toni Morrison