The phrase "abrupt kill" is correct and usable in written English.
It can be used in contexts where a sudden or unexpected termination of something is being described, such as in gaming, storytelling, or discussions about abrupt endings.
Example: "The game took an unexpected turn when the character faced an abrupt kill, leaving players shocked and eager to understand what went wrong."
Alternatives: "sudden death" or "instant termination".
When Tom discovers that another guest had encouraged his daughter to dance (the man had seen the child hanging back shyly at the edge of the dance floor), Tom makes the decision, as cool and logical to him as it seems abrupt to us, to kill him.
Katniss's alliance with Rue is brought to an abrupt end when Rue is killed by another tribute, whom Katniss then kills in self-defence with an arrow.
In the third season, the writers tried to integrate two previously unseen crash survivors named Nikki Fernandez Kiele Sanchezz) and Paulo (Rodrigo Santoro) into the story, but the pair was negatively received for their abrupt appearance and the writers killed them off after seven appearances.
Killing people is ugly, brutal and abrupt.
Celia's education came to an abrupt end the day two gang members threatened to kill her for entering their turf in El Salvador's San Salvador.
Abrupt temperature changes can send fish into shock and kill them.
An earless baby rabbit that became a rising star on Germany's celebrity animal scene had its 15 minutes of fame brought to an abrupt end when it was accidentally stepped on and killed by a television cameraman.
Melzer describes an abrupt change where military members were ordered to "shoot to kill", replacing prior orders to incapacitate.
Long-standing traditions of trapping or killing local wildlife may not come to an abrupt end even after the implementation of regulatory approaches such as preventive patrols (see also Infield 2001).
But their lives came to an abrupt, uncommon end: They were among the 14 passengers who were killed in the brutal crash of a bus this weekend as it returned at dawn to Chinatown from the Mohegan Sun casino in Connecticut.
