dispel in WordNet English dictionary

1. to cause to separate and go in different directions
   "She waved her hand and scattered the crowds"
   disperse  dissipate  dispel  break up  scatter 
   
2. force to go away; used both with concrete and metaphoric meanings
   "Drive away potential burglars"; "drive away bad thoughts"; "dispel doubts"; "The supermarket had to turn back many disappointed customers"
   chase away  drive out  turn back  drive away  dispel  drive off  run off