de facto marriage; common-law marriage
Refers to a couple living together in a marriage-like relationship without legal registration. Often used in legal or formal contexts. Compare with 事実婚, which may emphasize the intentional choice not to register.
See also: 事実婚
They are in a common-law marriage.
She claimed inheritance rights as a common-law wife.
de facto marriage; common-law marriage
Compound of 内 (inside, informal) and 縁 (relation, bond), literally 'informal relation'. The term has been used in Japanese law to describe unregistered marital relationships.