The act of killing one's wife

A. Genocide

B. Uxoricide

C. Canicide

D. Avicide

Answer: Option B

Solution(By Examveda Team)

One word substitute is Uxoricide.

Genocide: the deliberate killing of a large group of people, especially those of a particular nation or ethnic group.
Uxoricide: the killing of one's wife.
Canicide: the killing of a dog.
Avicide: substance (normally, a chemical) which can be used to kill birds.