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.
Today, the Princess of Wales has followed her father-in-law’s cue, welcoming the Nigerian president, Bola Ahmed Tinubu, and First Lady Oluremi Tinubu while wearing a grey and white coat by the British-Nigerian designer. Olivia Allen, Vogue, 18 Mar. 2026 Gyllenhaal’s character goes on the honeymoon with his would-be father-in-law, played by Costner, after his fiancée dies two days before their wedding. Etan Vlessing, HollywoodReporter, 18 Mar. 2026 And her father-in-law is a season ticket holder with the Checkers. Charlotte Observer, 16 Mar. 2026 Her mother, Delia Fabro-Miske, was sentenced in 2025 to seven years in prison for her role in her father-in-law’s criminal enterprise. Bay Area News Group, Mercury News, 11 Mar. 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 20 Mar. 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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