[sev-uh n-tee]
noun, plural sev·en·ties.
  1. a cardinal number, 10 times 7.
  2. a symbol for this number, as 70 or LXX.
  3. a set of this many persons or things.
  4. seventies, the numbers, years, degrees, or the like from 70 through 79, as in referring to numbered streets, indicating the years of a lifetime or of a century, or referring to degrees of temperature: They live in the Seventies. His uncle is in his early seventies. It was in the seventies yesterday.
  5. the Seventy, the body of scholars who produced the Septuagint.
  1. amounting to 70 in number.

Origin of seventy

1150–1200; Middle English; Old English seofontig. See seven, -ty1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for seventies

Contemporary Examples of seventies

Historical Examples of seventies

British Dictionary definitions for seventies


noun plural -ties
  1. the cardinal number that is the product of ten and sevenSee also number (def. 1)
  2. a numeral, 70, LXX, etc, representing this number
  3. (plural) the numbers 70–79, esp the 70th to the 79th year of a person's life or of a particular century
  4. the amount or quantity that is seven times as big as ten
  5. something represented by, representing, or consisting of 70 units
    1. amounting to seventythe seventy varieties of fabric
    2. (as pronoun)to invite seventy to the wedding

Word Origin for seventy

Old English seofentig
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

Word Origin and History for seventies

1859 as the years of someone's life between 70 and 79; from 1837 as the eighth decade of years in a given century. See seventy.


Old English (hund)seofontig, from seofon (see seven) + -tig (see -ty (1)). Cf. Old Frisian soventich, Middle Dutch seventich, Old Norse sjau tiger.

Online Etymology Dictionary, © 2010 Douglas Harper