widower
/ˈwɪdoʊɚ/noun
A man whose wife or spouse has died and who has not remarried; the male counterpart of a widow.
Unusually, the male term is derived from the female one; 'widow' is the base word. There is no verb: one is 'widowed'.
Related words
bachelorA man who could marry but has not yet done so.anniversaryThe date each year that marks an exact number of years since an important event took place.spinsterAn older woman who has never married, especially one considered past the usual age for marriage.honeymoonThe holiday or stretch of time that a couple enjoys right after getting married.nannyA person employed to look after a family's children.engagementThe state of being interested and involved in something, feeling drawn in and curious about what comes next.