1. In an imperious manner.

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

• umperiously,
• jmperiously,
• kmperiously,
• omperiously,
• 9mperiously,
• 8mperiously,
• inperiously,
• ikperiously,
• ijperiously,
• imoeriously,
• imleriously,
• impetiously,
• imperiouslly,
• impuriously,
• impariously,
• Biferiously,
• impertusly,
• supersiously,
• impiriouses,
• imperisously

• imperial,
• imperatively,
• imperious,
• improper,
• imperfectly,
• imperiousness,
• imperialism,
• imprison,
• impervious,
• imperialistic,
• imperviousness,
• imperially,
• imperato,
• improperly,
• imperialist,
• imperial moth.

The adjective form of "imperiously" is "imperious".