1. Double.

2. In a double degree.

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

• twould,
• tworld,
• trifold,
• tofold,
• tooxoid,
• rwofold,
• fwofold,
• gwofold,
• ywofold,
• 6wofold,
• 5wofold,
• tqofold,
• twofild,
• twofoled,
• towfold,
• twoflod,
• twofolt,
• twyfold,
• twifoled,
• Twifolt

The adjective form of the word "twofold" is "twofolded".

The plural form of "twofold" is "twofolds".

The singular form of the word "twofold" is "twofold".