ninety
NYN-dee/ˈnaɪn.di/UKNYN-tee/ˈnaɪn.ti/
- 1The cardinal number following eighty-nine and preceding ninety-one, written as 90 in Arabic numerals and XC in Roman numerals.
The train reached ninety miles per hour on the open stretch of track.
Nearly ninety percent of survey respondents supported the new policy.
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Origin
From Middle English nynty, from Old English hundniġontiġ, from Proto-Germanic *newuntēhundą ("ninety"), and equivalent to nine + -ty. It is related to Dutch negentig, German neunzig, and Swedish nittio.