Father in law synonyms, Father in law pronunciation, Father in law translation, English dictionary definition of Father in law . n. pl. fathers-in- law 1. The father of one's spouse. A father-in-law is the father of a person's spouse. [2] Two men who are fathers- in-law to each other's children may be called co-fathers- in-law , or, if there are grandchildren, co-grandfathers. Definition of father-in- law noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. the father of your spouse"Father-in- law ." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/father-in- law . Accessed 25 Oct. 2025. Copy ...
