1. Nine times ten.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ninethy,
• ninto,
• niffty,
• nudety,
• niney,
• uninty,
• kinet,
• ninetee,
• nineten,
• nineth,
• nindey,
• noney,
• nitnety,
• twnety,
• nindy,
• ninelty,
• ninedy,
• nintety,
• niety,
• ningt

• nimiety.

The adjective form of the word "ninety" is "ninetieth".

The plural of the "ninety" can be the "nineties".

The singular of the "ninety" can be the "ninety".