Philip Newton heard from Okrand at qepHom'a' 2011 [11/14/2011]:

"I also found out that qIl can mean not only cancel but also abort (in the sense of "abort a computer program", not a child)."

SEE ALSO:

qIl cancel
Dor end
van end (an event)
ghang end (an event) prematurely
wuqHa' commute (legal sentence))
qagh interrupt
tlhoch contradict

Particularly in the sense of a computer program taking priority over another one.