subjugate
     v 1: put down by force or intimidation; "The government quashes
          any attempt of an uprising"; "China keeps down her
          dissidents very efficiently"; "The rich landowners
          subjugated the peasants working the land" [syn: {repress},
           {quash}, {keep down}, {subdue}, {reduce}]
     2: make subservient; force to submit or subdue [syn: {subject}]
Source: WordNet® 2.0