in-law
UK: ɪn lɔː | US: ɪn lɔː
n. a relative by marriage (e.g., mother-in-law, brother-in-law)
The term "in-law" originates from Middle English, combining "in" (indicating a relationship) and "law" (referring to legal or formal ties). It reflects the idea that such relatives are connected through marital law rather than blood. Over time, it became a standard suffix to denote familial relationships by marriage (e.g., father-in-law). The construction highlights the societal importance of legal bonds in defining family structures.
She has a close relationship with her mother-in-law.
My brother-in-law is visiting us next weekend.
They invited all their in-laws to the wedding.
He gets along well with his father-in-law.
In some cultures, in-laws play a significant role in family decisions.