WordWeb Online

1. Put an end to a state or an activity
   "discontinue teasing your little brother";
   - stop, cease, give up, quit, lay off, surcease [archaic]
    
2. Come to or be at an end
   "the support from our sponsoring agency will discontinue after March 31"
    
3. Prevent completion
   - break, break off, stop

Derived forms: discontinued, discontinues, discontinuing

Type of: cease, end, finish, stop, terminate

Antonym: keep