Word.ws English Dictionary

mother-out-law

mother-out-law noun: the mother of one's boyfriend or girlfriend.

Noun

mother-out-law (plural mothers-out-law)

  1. The mother of one's boyfriend or girlfriend.
  2. The mother of any of one's friends.
  3. The mother of one's ex-spouse.
    • The old Cape Cod commune-istas had caught up enough with my mother out-law and were now asking after notable events in the lives of her offspring.2006, Harlyn Aizley, Confessions of the Other Mother: Nonbiological Lesbian Moms Tell All! (Social Science), →ISBN, pZgDAQAAQBAJ, page 36

Forms of mother-out-law

pluralmothers-out-law

Origin of mother-out-law

From mother + -out-law, by analogy to mother-in-law.

Questions about mother-out-law

What does mother-out-law mean?
Mother-out-law means the mother of one's boyfriend or girlfriend.
What part of speech is mother-out-law?
Mother-out-law is a noun.
What is the plural of mother-out-law?
The plural of mother-out-law is mothers-out-law.

Words near mother-out-law in the dictionary

  1. mother-of-pearl
  2. mother-of-pearl cloud
  3. mother-of-pearl clouds
  4. mother-of-pearls
  5. mother-of-thyme
  6. mother-out-law
  7. mother-spot
  8. mother-spots
  9. mother-to-be
  10. mother-tongue
  11. mother-wit

Source and license

Adapted from Wiktionary: mother-out-law (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “mother-out-law.” Word.ws, https://word.ws/mother-out-law. Based on Wiktionary, CC BY-SA 4.0.