Dictionary.com
Thesaurus.com
Synonyms

complain

American  
[kuhm-pleyn] / kəmˈpleɪn /

verb (used without object)

complains, present (3rd person singular) complained, past participle, past complaining present participle
  1. to express dissatisfaction, pain, uneasiness, censure, resentment, or grief; find fault.

    He complained constantly about the noise in the corridor.

    Antonyms:
    rejoice
  2. to tell of one's pains, ailments, etc..

    to complain of a backache.

  3. to make a formal accusation.

    If you think you've been swindled, complain to the police.


complain British  
/ kəmˈpleɪn /

verb

  1. to express resentment, displeasure, etc, esp habitually; grumble

  2. (foll by of) to state the presence of pain, illness, etc, esp in the hope of sympathy

    she complained of a headache

"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

complain Idioms  

Synonym Usage

Complain, grumble, growl, whine are terms for expressing dissatisfaction or discomfort. To complain is to protest against or lament a wrong: to complain about high prices. To grumble is to utter ill-natured complaints half to oneself: to grumble about the service. Growl may express more anger than grumble : to growl in reply to a question. To whine is to complain in a meanspirited way, using a nasal tone: to whine like a coward, like a spoiled child.

Other Word Forms

Derived Forms

Etymology

Origin of complain

First recorded in 1350–1400; Middle English compleinen, from Anglo-French compleign-, stem of compleindre, Old French complaindre, from Vulgar Latin complangere (unrecorded), from Latin com- com- + plangere “to beat, lament, strike”; see plaint

Explanation

To complain is to express your unhappiness about something. You might complain to your landlord about a raise in your rent, or to the cops about your noisy neighbors. Just don't whine; it won't get you anywhere. Speakers of Yiddish will know that complain is often interchangeable with kvetch, which is what you do when you don't like the food or the small portions. But you can complain in a more formal way by, say, writing a letter or even filing a lawsuit. But whether the issue is large or small, do yourself a favor and don't complain too often, or people might stop taking you seriously.

Keep Reading on Vocabulary.com

Vocabulary lists containing complain

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.

It was pretty miserable — but I wasn’t about to complain about free housing.

From MarketWatch • Jun. 2, 2026

Job seekers who walk through his door these days often complain about not getting any responses to their applications.

From The Wall Street Journal • May 27, 2026

"Ex footballers will all be saying handball and no one would complain about it."

From BBC • May 17, 2026

They run L.A. — and now Japan — and their star-studded team leads baseball in road attendance, generating money for the rival owners that complain about the Dodgers.

From Los Angeles Times • May 12, 2026

This part of Daffodil Manor was freezing cold, and Ophie had often heard her mother complain that the rooms seemed to keep a chill even with a fire roaring in the hearth.

From "Ophie's Ghosts" by Justina Ireland

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "complain" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com