One word substitution is Genocide. Matricide : the killing of one's mother. Regicide : the action of killing a king. Homicide : the killing of one person by another. Genocide : the deliberate killing of a large group of people, especially those of a particular nation or ethnic group.
From One Word Substitution · English Language Competence Test
One who cannot die
The act of killing one's wife
One who eats everything
Person who makes love for amusement without serious intentions
One who cannot be corrected
To remove the skin of a potato or an orange
A person who insists on something
A sad song: