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in cooperation

ADVERB
synchronously
Synonyms
WEAK
all at once all together as one at one fell swoop closely coincidentally collectively combined commonly concertedly concomitantly concurrently conjointly contemporaneously en masse hand in glove hand in hand in a body in concert in one breath in sync in tandem in unison jointly mutually on the beat side by side simultaneously synchronically unanimously unitedly with one accord with one voice with the beat
ADVERB
together
Synonyms
STRONGEST
closely collectively in tandem jointly simultaneously
STRONG
unitedly
WEAK
all together as one at one fell swoop coincidentally combined commonly concertedly concomitantly concurrently conjointly contemporaneously en masse hand in glove hand in hand in a body in concert in one breath in sync in unison mutually on the beat side by side synchronically unanimously with one accord with one voice with the beat
Antonyms
WEAK
apart individually separately

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.

Spoljaric said her organisation was "preparing an operational response to humanitarian needs on the ground", in cooperation with the Afghan and Pakistan Red Crescent societies and state authorities.

From Barron's • Feb. 27, 2026

"We are implementing this in cooperation with SpaceX," Fedorov stated, adding that instructions on registering the terminals would be forthcoming.

From BBC • Feb. 2, 2026

“I’m working directly in cooperation with the Venezuelans,” Wright said, and pledged to get oil that has been stuck in floating offshore storage back on the markets.

From Barron's • Jan. 7, 2026

Energy Secretary Chris Wright said he’s working directly in cooperation with Venezuela and that the U.S. is ready to get Venezuela’s crude “moving again and sell it.”

From MarketWatch • Jan. 7, 2026

The Pew report, done in cooperation with several other nonprofit groups, found that nearly 90 percent of teachers said the Internet is creating “an easily distracted generation with short attention spans.”

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel