expire

break off, break up, cease, close, conclude, dead-end, determine, die, discontinue, elapse, end, finish, go, halt, lapse, leave off, let up, pass, quit, stop, terminate, wind up, wink (out)

blow (out), breathe (out), exhale, expel

check out, conk (out), croak [slang], demise, depart, die, drop, end, exit, fall, go, part, pass (on), pass away, perish, succumb