subjugate in WordNet English dictionary

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"
   repress  quash  keep down  subdue  subjugate  reduce 
   
2. make subservient; force to submit or subdue
   subjugate  subject