verb (v)

• cause to move forward with force(verb.contact)

  Example:
  Steam propels this ship.
  

  Synonym:
  impel
  

  source: wordnet30
• give an incentive for action(verb.creation)

  Synonym:
  actuate, incite, motivate, move, prompt
  

  source: wordnet30
• To drive forward; to urge or press onward by force; to move, or cause to move; as, the wind or steam propels ships; balls are propelled by gunpowder.(verb)

  source: webster1913