English Reference

Word

complaint

Phoneticscom·plaint, stress on the second syllable

US/kəmˈpɫeɪnt/

UK/kəmplˈeɪnt/

Definitions

01expression of dissatisfaction

B1 · Intermediate Countable noun

n. a statement that you are unhappy or not satisfied with a situation or service.

n. the act of expressing dissatisfaction or the statement itself regarding a perceived grievance.

“The customer made a formal complaint because the waiter was very rude.”

“The department received a formal complaint regarding the lack of transparency in the recent promotion process.”

Usage

Often used with the verbs 'make', 'file', or 'lodge'.

Pitfall

I want to make a complain about the food.

I want to make a complaint about the food.

Use 'complain' as a verb and 'complaint' as a noun.

Antonyms

02legal accusation

C1 · Advanced Countable noun Law Formal · Technical

n. a formal legal document that starts a case or accuses someone of a crime.

n. a formal legal document that sets out the facts and legal reasons for a lawsuit or a criminal charge.

“The lawyer filed a complaint against the company for breaking the contract.”

“The plaintiff's attorney drafted a civil complaint alleging breach of fiduciary duty and seeking compensatory damages.”

Usage

In legal contexts, this is a countable noun referring to a specific document.

03medical illness

B2 · Upper Intermediate Countable noun Medicine Formal

n. an illness or a medical problem, usually one that is not very serious.

n. a physical ailment or medical disorder, often used when describing symptoms to a doctor.

“He went to the doctor because of a persistent stomach complaint.”

“The patient presented with a minor respiratory complaint that had persisted for several weeks despite over-the-counter treatment.”

Teaching tip

This is a more formal way to say 'illness' or 'problem' in a medical context.

Collocations

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

Verb

01. deal with a complaint

“Our customer service team is trained to deal with every complaint quickly and fairly.”

verb + prep + noun

02. file a complaint

“The customer decided to file a complaint after his flight was cancelled without notice.”

verb + noun

03. make a complaint

“If you are not happy with the service, you should make a complaint to the manager.”

verb + noun

04. receive a complaint

“The restaurant received a complaint about the food being cold.”

verb + noun

Adjective

05. common complaint

“A common complaint among students is that they have too much homework.”

adj + noun

06. formal complaint

“She submitted a formal complaint to the human resources department.”

adj + noun

Noun

07. complaint procedure

“Please follow the official complaint procedure if you wish to report an issue.”

noun + noun

08. letter of complaint

“I am writing this letter of complaint to express my disappointment with the product.”

noun + of + noun

Etymology

From Middle English compleynte, from Anglo-Norman compleint, from Old French compleindre, eventually from Latin planctus (whence plaint).

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

Word family

NOUN

complaint(B1)

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.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL 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: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
Frequency
Common
Level
B1 · IntermediateOxford
Updated

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English Reference