The act of killing one's wife is called "mariticide." It is a serious crime and is punishable by law.
Regicide
Arther disagreed with his wife because he knew that killing a man was a murder and an immoral act
It is called ficilicide. :) You're welcome!
Murder
The title of the book about a wife killing her husband is "Gone Girl" by Gillian Flynn.
homicide
homicide
Yes Ron Killing's does have a wife
Killing of one's husband: Mariticide or viricide Killing of one's wife: Uxoricide
the act of killing of a tyrant
The word you're looking for may be "infanticide."