English · Numbers & Time
ninety
/ˈnaɪnti/
[/ˈnaɪnti/]
the number 90
Beginnernumeral
Definition
The number 90.
Example
She is ninety years old but still walks two miles every morning.
She is ninety years old but still walks two miles every morning.
Etymology
From Old English "nigontig," nine tens.
How & Where It’s Used
A common round number, especially for advanced ages.