father-in-law

noun

ˈfä-t͟hə-rən-ˌlȯ How to pronounce father-in-law (audio)
-t͟hərn-ˌlȯ
plural fathers-in-law ˈfä-t͟hər-zən-ˌlȯ How to pronounce father-in-law (audio)
1
: the father of one's spouse
2
archaic : stepfather

Examples of father-in-law in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Kate's visit with cancer patients on Thursday follows an appearance alongside King Charles III, her father-in-law, at Windsor Castle earlier this week for a reception recognizing cancer charities, researchers, health care workers and community organizations supporting those affected by the disease. ABC News, 4 June 2026 On June 2, the Princess of Wales joined her father-in-law, King Charles, who continues to undergo treatment for a cancer diagnosis announced in 2024, and Queen Camilla at a royal reception commemorating the 125th anniversary of Cancer Research UK. Janine Henni, PEOPLE, 4 June 2026 That instinct toward image-as-communication shapes the film’s central tension, between the deliberate, enduring photographs made at father-in-law Makoto’s traditional photo studio and the spontaneous clips Yuta fires off on his phone. Naman Ramachandran, Variety, 2 June 2026 Oded Mazor’s late father-in-law, Alex Rosenblum, purchased Gulliver’s. Brock Keeling, Oc Register, 27 May 2026 See All Example Sentences for father-in-law

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of father-in-law was in the 14th century

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Cite this Entry

“Father-in-law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/father-in-law. Accessed 14 Jun. 2026.

Kids Definition

father-in-law

noun
fa·​ther-in-law
ˈfät͟h-(ə-)rən-ˌlȯ
ˈfȧt͟h-
-ərn-ˌlȯ
plural fathers-in-law
ˈfät͟h-ər-zən-
ˈfȧt͟h-
: the father of one's husband or wife

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