en el diccionario PONS
I. twen·ty [ˈtwenti, ingl. am. -t̬i-] ADJ. inv.
- twenty
-
II. twen·ty [ˈtwenti, ingl. am. -t̬i-] SUST.
2. twenty (age):
I. eighty [ˈeɪti, ingl. am. -t̬i] ADJ.
1. eighty (number):
II. eighty [ˈeɪti, ingl. am. -t̬i] SUST.
1. eighty (number):
2. eighty (age):
3. eighty (decade):
5. eighty coloq. (speed: 80 mph):
Entrada de OpenDict
twen·ty-twen·ty ˈvi·sion SUST. no pl
- twenty-twenty vision
-
twen·ty-some·thing [ˈtwentisʌm(p)θɪŋ] SUST. modifier
- twenty-something
-
twen·ty-four-hour ˈclock SUST.
Entrada de OpenDict
twenty-first ADJ.
- twenty-first
-