Meaning & use

in-law

noun·Everyday

A relative connected to someone through marriage rather than by blood, such as a spouse's parent or sibling.

See it in a sentence

My mother-in-law visits every Sunday and always brings homemade bread.

We get along well with our in-laws, so holiday dinners are relaxed and cheerful.

A note on using this word

In-law is usually combined with a family term, as in mother-in-law or brother-in-law; used alone it informally means any relative by marriage.

Words with a similar meaning

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