1. Hatefully.

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

• oveously,
• hidiously,
• oviouslly,
• ouviously,
• abiously,
• obliously,
• odviously,
• oviously,
• odviosly,
• obeously,
• oviousley,
• obiosly,
• eriously,
• odviouly,
• aviously,
• obsiously,
• obiously,
• ovously,
• obiusly,
• obously

The adjective form of the word "odiously" is "odious".

The plural form of the word "odiously" is "odiously". The word "odiously" is an adverb and it does not typically have a plural form. Adverbs typically do not change their form to indicate singular or plural.

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