Eighty
/ˈeɪ.ti/noun
The number equivalent to eight times ten.
Did you know?The form of *eighty* preserves the old Germanic way of building tens from numbers, where the original meaning was literally “eight tens,” not a separate mysterious number.
Etymological Timeline
Proto-Indo-European
PIE
*oḱtṓw
“eight”
Proto-Germanic
PGmc
*ahtōu
“eight”
Old English
English
eahtatig
“eighty, literally 'eight tens'”
Middle English
English
eighti
“eighty”
Modern English
English
eighty
“the number 80”