ending, termination, conclusion - the act of ending something; "the termination of the agreement"

coup de grace, deathblow - the blow that kills (usually mercifully)

death - the act of killing; "he had two deaths on his conscience"

euthanasia, mercy killing - the act of killing someone painlessly (especially someone suffering from an incurable illness)

homicide - the killing of a human being by another human being

despatch, dispatch - killing a person or animal

fell - the act of felling something (as a tree)

self-annihilation, self-destruction, suicide - the act of killing yourself; "it is a crime to commit suicide"

slaughter - the killing of animals (as for food)

poisoning - the act of giving poison to a person or animal with the intent to kill

suffocation, asphyxiation - killing by depriving of oxygen

ritual killing, sacrifice - the act of killing (an animal or person) in order to propitiate a deity

electrocution - killing by electric shock

beheading, decapitation - killing by cutting off the head

genocide, race murder, racial extermination - systematic killing of a racial or cultural group