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Synonyms

complaint

American  
[kuhm-pleynt] / kəmˈpleɪnt /

noun

  1. an expression of discontent, regret, pain, censure, resentment, or grief; lament; faultfinding.

    his complaint about poor schools.

  2. a cause of discontent, pain, grief, lamentation, etc.

  3. a cause of bodily pain or ailment; malady.

    The doctor says I suffer from a rare complaint.

    Synonyms:
    ailment, illness, sickness
  4. Law. the first pleading of the plaintiff in a civil action, stating the cause of action.


complaint British  
/ kəmˈpleɪnt /

noun

  1. the act of complaining; an expression of grievance

  2. a cause for complaining; grievance

  3. a mild ailment

  4. English law a statement by which a civil proceeding in a magistrates' court is commenced

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does complaint mean? A complaint is a statement about something you’re unhappy or upset about. It has more specific meanings in legal and medical contexts. Complaint is the noun form of the verb complain. In legal terms, a complaint is the document that officially initiates a legal proceeding. In medicine, it refers to a symptom or cause of pain as reported by a patient. Example: I liked the movie, but my one complaint is that the women in the cast didn’t get enough screen time.

Other Word Forms

  • countercomplaint noun

Etymology

Origin of complaint

First recorded in 1350–1400; Middle English compleynte, from Middle French complainte, from Latin com- com- + plancta plaint

Explanation

A complaint is an objection to something that is unfair, unacceptable, or otherwise not up to normal standards. If your neighbors have a complaint about noise, they want you to be more quiet. A complaint is voiced objection to something, like a complaint about cold or disgusting-tasting food in a restaurant. Complaint is also a legal term — the plaintiff's reasons for bringing a civil action. Medically speaking, a complaint is a disorder or disease that is hard to cure completely. Loud cries of pain, anger, or sadness can also be called complaints.

Keep Reading on Vocabulary.com

Vocabulary lists containing complaint

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Ikhilov firm says the complaint is baseless.

From The Wall Street Journal • Apr. 12, 2026

The spokesperson also said it had submitted a formal complaint to the BBC about the documentary.

From BBC • Apr. 10, 2026

If you do want to file a complaint, first look at the airline’s contract of carriage.

From MarketWatch • Apr. 10, 2026

After the boy received lifesaving emergency care, the district transferred him to a different school without the mother’s knowledge or consent, the complaint alleges.

From Los Angeles Times • Apr. 8, 2026

He was furious and urged me to file a complaint with the Atlanta Police Department.

From "Just Mercy" by Bryan Stevenson