Definitions

cooperate

[koh-op-uh-reyt] / koʊˈɒp əˌreɪt /

VERB

work with; assist

Synonyms

STRONGEST

aid assist collaborate comply with conspire contribute coordinate further help participate unite uphold

STRONG

abet advance agree band befriend coincide combine concert concur conduce espouse forward league partner second succor

WEAK

back up be in cahoots chip in coadjute give-and-take go along with join forces join in lend a hand pitch in play ball pool resources pull together share in show willingness side with stick together take part work side by side work together

Antonyms

STRONGEST

block check counteract disagree harm hinder hurt obstruct oppose protest stop

STRONG

differ halt impede reject

WEAK

delay disturb encumber prevent

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 regulator added that it had asked participating banks to actively cooperate with the effort.

From The Wall Street Journal • Jun. 8, 2026

They also establish a strict obligation for migrants subject to expulsion to leave and cooperate with authorities, envisaging harsher penalties, including detention, for those who refuse to do so.

From Barron's • Jun. 1, 2026

After losing the suit, Johnson did not cooperate with efforts to track down his claimed assets and was found in contempt of court.

From Slate • May 28, 2026

While prosecutors noted in their sentencing memo that Iwamasa was the first defendant to cooperate against the others, they asked the judge to sentence him to more than three years in prison.

From Los Angeles Times • May 27, 2026

The best outcome for the women as a pair is for them to cooperate with each other.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos

Vocabulary lists containing cooperate

UCPS 6th Grade Roots List #1

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Divergent

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Chapter 28: The Cold War Era

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