1. In a murderous manner.

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

• nurderously,
• kurderously,
• jurderously,
• myrderously,
• mhrderously,
• mjrderously,
• mirderously,
• m8rderously,
• m7rderously,
• muederously,
• mudderously,
• murederously,
• murdereously,
• murderusly,
• murdarously,
• murderedously,
• murduously,
• murtherously,
• murdorously,
• murdurosly

• murder mystery,
• murderer,
• murderous,
• murderousness,
• murdered,
• murderess,
• murderee.

The adjective form of the word "murderously" is "murderous".

The plural form of the word "murderously" is "murderously" as it is already in adverb form and doesn't change when pluralizing nouns.

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