complain

verb

com·​plain kəm-ˈplān 

complained; complaining; complains

intransitive verb

1

: to express grief, pain, or discontent

complaining about the weather

2

: to make a formal accusation or charge

He threatened to complain of him to the captain.

complainer noun

complainingly

kəm-ˈplā-niŋ-lē 

adverb

Synonyms of complain

• scream
• whine
• moan
• grumble
• mutter
• worry

Examples of complain in a Sentence

He works hard but he never complains.

If you're unhappy with the service, you should complain to the manager.

The students complained that the test was too hard.

“These shoes are too tight,” he complained.

Recent Examples on the Web

Much of the area is marked by poverty and residents routinely complain they are left to fend for themselves during natural disasters. — Megan Janetsky, Arkansas Online, 25 Sep. 2026

But the final nail in Aaliyah’s coffin was hammered in when original Tribe target Jenna Doore told Brady Booker that Aaliyah complained about his behavior in the challenge. — Dalton Ross, Entertainment Weekly, 24 Sep. 2026

Or at least that's what his comments were initially focused on before complaining about his team's schedule. — Mark Harris Outkick, FOXNews.com, 24 Sep. 2026

Nobody complained when Pitt received the part of Louis de Pointe du Lac, a wealthy plantation owner in the late 18th century whom Lestat would eventually sire after Louis is consumed by grief over the death of his wife and child. — Brian Davids, HollywoodReporter, 23 Sep. 2026

Word History

Etymology

Middle English compleynen, from Anglo-French compleindre, from Vulgar Latin *complangere, from Latin com- + plangere to lament — more at plaint

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing complain

• can't complain

Rhymes for complain

• abstain
• airplane
• alkane
• arcane
• arraign
• attain
• backplane
• betaine
• biplane
• blockchain
• butane
• campaign

Kids Definition

complain

verb

com·​plain kəm-ˈplān 

1

: to express grief, pain, or discontent : find fault

complaining about the weather

2

: to accuse someone of wrongdoing

complainer noun

complainingly

-ˈplā-niŋ-lē 

adverb

Medical Definition

complain

intransitive verb

com·​plain kəm-ˈplān 

: to speak of one's illness or symptoms

the patient visited the office complaining of weight loss

Legal Definition

complain

intransitive verb

com·​plain

: to make a complaint