verb (v)

• move faster(verb.change)

  Example:
  The car accelerated.
  

  Synonym:
  quicken, speed, speed up
  Antonym:
  decelerate, retard, slow, slow down, slow up
  

  source: wordnet30
• cause to move faster(verb.change)

  Example:
  He accelerated the car.
  

  Synonym:
  speed, speed up
  Antonym:
  decelerate, slow down
  

  source: wordnet30
• To cause to move faster; to quicken the motion of; to add to the speed of; -- opposed to retard.(verb)

  source: webster1913