eighty

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eighty

A child counts eighty colorful marbles on the floor.

Definition
  1. Adjective:
    • Being ten more than seventy; equal to the product of eight and ten; the number 80.
  2. Noun:
    • The cardinal number that is the product of ten and eight; the figure or symbol representing this number (80, LXXX).
    • (plural: the eighties) The decade from 80 to 89 in a century, especially the twentieth century (1980–1989).
    • (plural: the eighties) The period of life between the ages of 80 and 89.
Examples
  • Adjective:
    • The old castle has eighty rooms.
    • She will be eighty years old next month.
  • Noun (cardinal number):
    • The answer is eighty.
    • Write eighty in numerals.
  • Noun (plural: the eighties):
    • My parents were born in the eighties (the 1980s).
    • He is in his eighties, but he is still very active.
Advanced Usage
  • "Eighty-something": Used informally to indicate an age in the eighties when the exact number is not specified or is unimportant.
    • My grandfather is eighty-something and still goes for a walk every day.
  • "Eighty-one, eighty-two, etc.": The numbers following eighty (81, 82, etc.).
Variants and Related Words
  • Eightieth (adj.): Constituting number eighty in a sequence; 80th.
    • They celebrated their eightieth wedding anniversary.
  • Eightieth (n.): The position or rank corresponding to the number eighty; one of eighty equal parts.
    • He finished in eightieth place in the race.
    • An eightieth of the total amount.
Synonyms
  • Fourscore (adj., n.): An archaic term meaning eighty.
    • "Fourscore and seven years ago..." (from the Gettysburg Address).
Related Phrases
  • The roaring eighties: A historical term sometimes used for the 1880s, particularly in Australia, or more generally for a period of economic prosperity and social change.
  • Mid-eighties: The period around the middle of a decade in the eighties (e.g., around 1984–1986, or age 84–86).
eighty

A child counts eighty colorful marbles on the floor.

Adjective
  1. being ten more than seventy
Noun
  1. the cardinal number that is the product of ten and eight

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