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sixties - 2 dictionary results

six⋅ty

[siks-tee] noun, plural -ties, adjective
–noun
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.
–adjective
5. amounting to 60 in number.
6. like sixty, Informal. with great speed, ease, energy, or zest: Everyone was working like sixty to finish up before the holidays.

Origin:
bef. 900; ME (adj. and n.), OE sixtig (adj.); c. D zestig, G sechzig, ON sextigir. See six, -ty 1
six·ty   (sĭks'tē)   
n.   pl. six·ties
  1. The cardinal number equal to 6 × 10.
  2. sixties
    1. A decade or the numbers from 60 to 69: They planned to retire in their sixties. The breeze kept the temperature in the sixties.
    2. often Sixties The decade from 60 to 69 in a century.

[Middle English, from Old English sixtig; see s(w)eks in Indo-European roots.]
six'ty adj. & pron.
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