countersuit

noun

coun·​ter·​suit ˈkau̇n-tər-ˌsüt 

variants or less commonly counter-suit

plural countersuits also counter-suits

: 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

Watson on Wednesday morning filed an objection to Lopez’s countersuit. —Kansas City Star, 26 Nov. 2025

Today, Range’s outside counsel Samplin and Snyder swipe away CAA’s response to their client’s countersuit by doubling down on the noncompete of it all. —Dominic Patten, Deadline, 25 Nov. 2025

Range, in a countersuit filed in California state court on Monday evening, alleges CAA is maneuvering to undermine its growth by threatening to cancel equity for employees at the agency who want to work at the management start-up. —Winston Cho, HollywoodReporter, 25 Nov. 2025

Rebel Wilson made new allegations against the producers of her directorial debut — the latest in a year-long battle that has seen numerous suits and countersuits on multiple sides. —Ryan Coleman, Entertainment Weekly, 24 Nov. 2025

Word History

First Known Use

1814, in the meaning defined above

Rhymes for countersuit

• absolute
• arrowroot
• attribute
• bitterroot
• constitute
• convolute
• destitute
• disrepute
• dissolute
• execute
• institute
• involute