verb (v)

• put down by force or intimidation(verb.social)

  Example:
  The rich landowners subjugated the peasants working the land.
  

  Synonym:
  keep down, quash, reduce, repress, subdue
  

  source: wordnet30
• make subservient; force to submit or subdue(verb.social)

  Synonym:
  subject
  

  source: wordnet30
• To subdue, and bring under the yoke of power or dominion; to conquer by force, and compel to submit to the government or absolute control of another; to vanquish.(verb)

  source: webster1913