[ siks-tee ]

noun,plural six·ties.
  1. a cardinal number, ten times six.

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

  1. a set of this many persons or things.

  2. 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.

  1. amounting to 60 in number.

Idioms about sixty

  1. like sixty, Informal. with great speed, ease, energy, or zest: Everyone was working like sixty to finish up before the holidays.

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, -ty1

Words Nearby sixty Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use sixty in a sentence

British Dictionary definitions for sixty


/ (ˈsɪkstɪ) /

nounplural -ties
  1. the cardinal number that is the product of ten and six: See also number (def. 1)

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

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

    • amounting to sixty: sixty soldiers

    • (as pronoun): sixty are dead

Origin of sixty

Old English sixtig

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012