1. make common cause - Verb
2. make common cause - Phrase
make common cause (third-person singular simple present makes common cause, present participle making common cause, simple past and past participle made common cause)
To cooperate, to enter into an alliance for a shared goal.
Synonyms: join forces, team up
Women are a sisterhood. They make common cause in behalf of the sex; and, indeed, this is natural enough, when we consider the vast power that the law gives us over them. William Cobbett
It was imperative to make common cause with the oppressed, in order to secure a new system opposed to the ambitions and governing habits of the oppressors. José Martí
I prefer to make common cause with those whose weapons are guitars, banjos, fiddles and words. Theodore Bikel
One day I heard a speech of Hitler. In this speech he said that the German factory worker and the German labourer must make common cause with the German intellectual worker. Fritz Sauckel
Capitalism is the immoral distribution of capital... Germany will become free at that moment when the thirty millions on the left and the thirty millions on the right make common cause. Only one movement is capable of doing this: National Socialism, embodied in one Führer – Adolf Hitler. Joseph Goebbels
Nor should we exclude the possibility that Islamic terrorism may begin to make common cause with Western political extremists of the far Left and far Right. Richard Perle