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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.

She urged “all tribespeople and villagers” to cooperate with the military and law enforcement.

From The Wall Street Journal • Apr. 5, 2026

The one who wondered whether her body would ever cooperate with her longing.

From Slate • Mar. 29, 2026

But the agency did not say whether it would cooperate with the local authorities or follow a court ruling requiring it to do so.

From Salon • Mar. 27, 2026

Belarusian Foreign Minister Maxim Ryzhenkov said that in addition to the treaty of friendship and cooperation, the two sides would agree to cooperate in an array of fields from agriculture to information.

From Barron's • Mar. 25, 2026

Only with extreme effort could he get the first muscle to cooperate.

From "The Bluest Eye" by Toni Morrison

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.