A man who's wife has died is a widower. He is also bereaved, sometimes "the surviving spouse". If her death results from him killing her he is an uxoricide.
Snowman
Normal
The wife
a guy
Memento
A man who loses a wife is commonly referred to as a widower. This term specifically denotes a man whose spouse has passed away, distinguishing him from other marital statuses. The emotional and social implications of being a widower can vary, often involving grief and adjustment to life without a partner.
He is a widower.
a guy
A man whose wife dies is called a widower.
mr. Fredrickson in Up
In Hindi, a man would refer to his wife's second husband as "jeth" (जेठ).
a guy