Synonyms and antonyms of Family members by marriage in British Thesaurus

brother-in-law (noun)

the brother of your husband or wife

brother-in-law (noun)

your sister’s husband

brother-in-law (noun)

the husband of your husband’s sister, or of your wife’s sister

co-brother (noun)

Indian English the husband of your wife's sister

co-sister (noun)

Indian English the wife of your husband's brother

daughter-in-law (noun)

the wife of your son. You are her mother-in-law or father-in-law.

father-in-law (noun)

the father of your husband or wife. You are his son-in-law or daughter-in-law.

in-law (noun)

informal someone who you are related to by marriage, especially the father or mother of your husband or wife

mother-in-law (noun)

the mother of your husband or wife

sister-in-law (noun)

the sister of your husband or wife. The brother of your husband or wife is your brother-in-law.

sister-in-law (noun)

the wife of your brother. The husband of your sister is your brother-in-law.

son-in-law (noun)

the husband of your daughter. You are his father-in-law or mother-in-law.

stepbrother (noun)

someone’s stepbrother is the son of their stepfather or stepmother

stepchild (noun)

someone’s stepchild is the son or daughter of their husband or wife from a previous relationship

stepdad (noun)

informal a stepfather

stepdaughter (noun)

the daughter of your husband or wife, who is not your child. You are her stepfather or stepmother.

stepfather (noun)

someone’s stepfather is their mother’s new husband in a second or later marriage

stepmom (noun)

mainly American a stepmother

stepmother (noun)

someone’s stepmother is their father’s new wife in a second or later marriage

stepmum (noun)

informal a stepmother

stepparent (noun)

a stepfather or stepmother

stepsister (noun)

someone’s stepsister is the daughter of their stepfather or stepmother

stepson (noun)

the son of your husband or wife, who is not your child. You are his stepfather or stepmother.