put out of one's misery
- (transitive, idiomatic, informal) To submit (a person or animal) to euthanasia.
- (transitive, idiomatic, informal, figuratively) To end or destroy something for the good of the individuals involved in it.
2011 October 23, Phil McNulty, “Man Utd 1 - 6 Man City”, in BBC Sport:
- And with some United supporters actually pleading with referee Clattenburg to put them out of their misery, one more moment of brilliance from the magical Silva found Dzeko surging into the area to finish left-footed for his second.
- (transitive, idiomatic, informal) To give somebody information he/she has been waiting for.
informal: to euthanize