make common cause

(slightly formal)

to work together to achieve something A number of groups have made common cause with local people to stop the highway from being built. The two countries have begun to make common cause against shared enemies.

Common Names:

Name	Pronounced	Usage
Sampson (1)	-	Biblical Greek
Piri	-	Hungarian
Nizhoni	-	Native American, Navajo
Rohan (1)	-	Indian, Hindi, Marathi, Bengali, Kannada
Gretchen	['gretʃən]
Mckenna	mə-KEN-ə	English (Modern)