countersuit

noun

coun·​ter·​suit ˈkau̇n-tər-ˌsüt How to pronounce countersuit (audio)
variants or less commonly counter-suit
plural countersuits also counter-suits
Synonyms of countersuitnext
: an opposing lawsuit
especially : a claim asserted by an opposing party in a lawsuit (such as a defendant) against the party bringing the original lawsuit (such as a plaintiff) : counterclaim
decided to file a countersuit against her accuser
The current appeal results from a patent infringement suit and countersuit between Apple Inc. ("Apple") and Samsung Electronics Co … —Apple, Inc. v. Samsung Electronics Co., Ltd., 816 F. 3d 788 (2016)

Examples of countersuit 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.
The federal ruling from Denver was clarified three days later to exclude athletes who'd already signed professional contracts, which prompted a countersuit filed in Louisiana state court that gave those athletes a temporary restraining order. — CBS News, 28 Oct. 2026 Baldoni then filed a countersuit, but it was dismissed in June 2025. — Juliana Ukiomogbe, InStyle, 14 Oct. 2026 The jury also rejected a countersuit brought by Joby that accused Aerosonic of selling it defective probes. — Los Angeles Times, 7 Oct. 2026 Polymarket denies wrongdoing and filed a countersuit against New York in federal court. — Marshall Cohen, CNN Money, 30 Sep. 2026 See All Example Sentences for countersuit

Word History

First Known Use

1814, in the meaning defined above

Time Traveler
The first known use of countersuit was in 1814

Rhymes for countersuit

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Browse Nearby Words

countersuggestion
countersuit
countersun
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Cite this Entry

“Countersuit.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countersuit. Accessed 1 Nov. 2026.

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