1. Thrice ten.

2. The number of thrice ten.

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

• hitty,
• thith,
• thiey,
• thruy,
• thirety,
• thirtyif,
• thrity,
• thirtsy,
• chairty,
• thenty,
• thirdty,
• thift,
• thirdy,
• therby,
• theiry,
• thirthy,
• theirry,
• thired,
• thirth,
• thursty

• thread,
• thorite,
• third,
• throat,
• thwart,
• theriot,
• third eye,
• threat,
• thready,
• threatt,
• thereto,
• Threet,
• throaty.

The adjective form of the word "thirty" is "thirtieth".

The plural of the "thirty" can be the "thirties".

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