eighty
number
ˈeɪti 
ˈeɪti 
1 802 noun the eighties [plural] numbers, years or temperatures from 80 to 89eightieth ˈeɪtiəθ ˈeɪtiəθ Help
There are examples of how to use ordinal numbers at the entry for fifth.Idioms
in your eighties
between the ages of 80 and 89
