Etymology
Advertisement

eighty (adj., n.)

"1 more than seventy-nine, twice forty; the number which is one more than seventy-nine; a symbol representing this number;" late 13c., eigteti, from eight + -ty (1). Replacing Old English hundeahtatig, with hund- "ten." Related: Eightieth.

Advertisement
Advertisement
Definitions of eighty
1
eighty (n.)
the cardinal number that is the product of ten and eight;
Synonyms: " / lxxx / fourscore
2
eighty (adj.)
being ten more than seventy;
Synonyms: " / lxxx / fourscore
From wordnet.princeton.edu