nine·ty 
(nīntē)
(nīntē)n. pl. nine·ties
1. The cardinal number equal to 9 × 10.
2. nineties
a. A decade or the numbers from 90 to 99: My grandparents are in their nineties. During the heat wave, the temperature stayed in the nineties.
b. often Nineties The decade from 90 to 99 in a century.
[Middle English ninti, from Old English nigontig; see new in the Appendix of Indo-European roots.]
ninety adj. & pron.
- witching
- witching hour
- witchingly
- witch of Agnesi
- witchy
- wite
- witenagemot
- with
- with a grain of salt
- withal
- with all heart
- with all (one's) heart
- with all one's heart
- with an eye to
- with a vengeance
- with bad grace
- with child
- withdraw
- withdrawable
- withdrawal
- withdrawer
- withdrawn
- withdrawnness
- withe
- wither