eight times ten
Origin of eightyMiddle English eighteti from Old English (hund)eahtatig: see eight and -ty
the cardinal number between seventy-nine and eighty-one; 80; LXXX
the numbers or years, as of a century, from eighty through eighty-nine
- The cardinal number equal to 8 × 10.
- eighties a. A decade or the numbers from 80 to 89: They were still active in their eighties. Before noon, the temperature shot into the eighties.b. often Eighties The decade from 80 to 89 in a century.
Origin of eightyMiddle English eighti from Old English eahtatig ; see oktō(u) in Indo-European roots.