joined forces
Combined their efforts
Joined forces is a way of expressing the idea of collaboration or cooperation between two or more people, groups, companies, or organizations.
The forces that are joined are typically resources of some kind: The two companies joined forces to bring the new product to market.
When joined forces is in the past tense, it may be a synonym of merged or amalgamated: In 1990, the two parties joined forces to form a coalition government.
- banded togetherUnified for shared purpose
- coalitionTemporary alliance for action
- pactFormal agreement between parties
- unionJoining into one
- uniteBring together as one
teamed up · alliance · united front · league · in league with · partnership · synergy · came together · confederation · collaboration · amalgamation · mutual aid · common cause · cooperation · collective action · combine · merger · harmony