#1 discontinue v. [stop, cease, give up, quit, lay off] put an end to a state or an activity; "Quit teasing your little brother". wn
#2 discontinue v. come to or be at an end; "the support from our sponsoring agency will discontinue after March 31". wn
#3 discontinue v. [break, break off, stop] prevent completion; "stop the project"; "break off the negotiations". wn
vizzz