English Reference

Word

lawsuit

Phoneticslaw·suit, stress on the first syllable

US/ˈɫɔˌsut/

UK/lˈɔːsuːt/

Definitions

01legal case

B2 · Upper Intermediate Countable noun Law

n. a formal disagreement that people take to a court of law so a judge can decide who is right.

n. a case in civil law where one or more parties bring a dispute before a court for resolution.

“The company faced a massive lawsuit after their product caused several injuries.”

“The environmental group filed a class-action lawsuit against the manufacturer, alleging that toxic runoff had contaminated the local water supply for decades.”

Usage

Commonly used with the verbs 'file', 'bring', or 'win'.

Synonyms

legal actionsuitlitigationcase

02to sue

C2 · Proficiency Law Archaic

v. to start a legal case against someone.

v. to initiate or pursue a legal claim against a person or entity in a court of law.

“In the old story, the merchant threatened to lawsuit his rival over the broken contract.”

“The historical documents reveal an era where individuals would frequently lawsuit one another over minor property boundary disputes.”

Usage

This verb form is extremely rare in modern English; 'to sue' is the standard equivalent.

Teaching tip

While historically recorded as a verb, modern speakers exclusively use 'sue' for the action and 'lawsuit' for the noun.

Synonyms

suelitigate

Collocations

Common phrases and expressions where native English speakers use the word “lawsuit” in context.

Verb

01. dismiss a lawsuit

“The judge chose to dismiss the lawsuit due to a lack of sufficient evidence.”

verb + noun

02. file a lawsuit

“The former employees decided to file a lawsuit against the company for wrongful termination.”

verb + noun

03. settle a lawsuit

“Both parties agreed to settle the lawsuit out of court to avoid further legal expenses.”

verb + noun

Adjective

04. frivolous lawsuit

“The tech giant claimed it was a frivolous lawsuit intended only to damage their reputation.”

adj + noun

05. pending lawsuit

“The CEO refused to comment on the matter because of a pending lawsuit.”

adj + noun

Noun

06. class-action lawsuit

“Thousands of consumers joined the class-action lawsuit against the pharmaceutical firm.”

noun + noun

07. threat of a lawsuit

“The developer backed down immediately under the threat of a lawsuit from the neighborhood association.”

noun + of + noun

08. lawsuit filed

Real-World Examples

“The claimants' lawsuit alleges Wondermind failed to meet "even its most basic obligations, such as timely paying its employees and vendors".”
BBC News 14 Aug 2026
“ExxonMobil has described the lawsuits against it as “meritless” .”
The Guardian 10 Aug 2026

Etymology

From law + suit.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

Domain

Law

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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English Reference