Hypogamy
Name(s):
Marrying down socially
Nature
Hypergamy (colloquially referred to as "dating up" or "marrying up") is a term used in social science for the act or practice of a person dating or marrying a spouse of higher social status or sexual capital than themselves.
The antonym "hypogamy" refers to the inverse: marrying a person of lower social class or status (colloquially "marrying down"). Both terms were invented in the Indian subcontinent in the 19th century while translating classical Hindu law books, which used the Sanskrit terms anuloma and pratiloma, respectively, for the two concepts.
The term hypergyny is used to describe the overall practice of women marrying up, since the men would be marrying down.
Source: Wikipedia
Broader
Type
(G) Very specific problems