nephew-in-law
Sibling's child's husband
A nephew-in-law is the husband of one's niece, or the nephew of one's spouse.
The term follows the pattern of other "-in-law" relationships that arise through marriage rather than blood.
Like many extended in-law terms, it sees limited everyday use—people often simply say "my niece's husband" or refer to the person by name rather than by this formal kinship designation.
extended-family
Those connected by blood
family connection type
nephew-in-lawuncle-in-law
Relative by marriage, male
aunt-in-law · nephew · blood relative · parent-in-law · consanguine
social closeness/belonging
nephew-in-lawstranger
Person not yet known
outsider · non-relative · outcast · enemy
nephew, nephews, laws, lawful, lawless, lawfully, outlaw, outlaws, outlawed