ally
/ˈælaɪ/
verb
- To join or unite with another person, group, or country for a common purpose.
- The small kingdom decided to ally itself with the larger empire for protection.
- Several companies allied to develop new technology for clean energy.
- She allied with her classmates to organize the school fundraiser.
noun
- A person, group, or country that works with another for a common purpose or against a common enemy.
- During the war, Britain was a strong ally of the United States.
- The two environmental groups became allies in the fight against pollution.
- She found a trusted ally in her coworker when they worked on the project together.