dispense with in WordNet English dictionary

1. forgo or do or go without
   dispense with 
   
2. give up what is not strictly needed
   "he asked if they could spare one of their horses to speed his journey"
   spare  give up  part with  dispense with 
   
3. do without or cease to hold or adhere to
   "We are dispensing with formalities"; "relinquish the old ideas"
   waive  relinquish  forgo  forego  foreswear  dispense with