/əˈfaɪ.nəl/ – Adjective
Definition: có quan hệ thân thuộc do hôn nhân.
A more thorough explanation: In legal terms, “affinal” refers to a relationship established through marriage rather than through blood or descent. It typically pertains to relationships by marriage, such as in-laws or step-relatives.
Example: The affinal relationship between the two families was strengthened through the marriage of their children.