Pronunciation: (ō"vur-pou'ur),[key] —v.t. 1. to overcome, master, or subdue by superior force: to overpower a maniac. 2. to overcome or overwhelm in feeling; affect or impress excessively: overpowered with confusion and desire. 3. to gain mastery over the bodily powers or mental faculties of: a strong drink that quickly overpowered him. 4. to furnish or equip with excessive power: a giant motor that overpowered the pump.