Put one out of one's misery informal
To provide someone with information which they are longing for in order to calm them down or satisfy their senses of curiosity.
The police are hastily looking for their missing child to put his parents out of their misery as soon as possible.
Please, put me out of my misery and tell me the final scene of that movie.
To kill someone who is very ill or very old so that they do not suffer any more
I don't want to see this horrendous scene. Please put this injured cat out of its misery fast.
The old man wanted to put himself out of his misery.
The verb "put" must be conjugated according to its tense.
The origin of this phrase is not clear.
To not have any children
He is an old man having neither chick nor child, so when he gets sick no one pays him a visit.