harmoniousalliance

noun
UK /hɑːˈməʊniəs əˈlaɪəns/
US /hɑːrˈmoʊniəs əˈlaɪəns/

A group of people or countries that work together in a friendly and peaceful way.

The two clubs formed a harmonious alliance to clean up the park together.


OTHER MEANINGS

2. A bond between groups that share goals and avoid conflict.

The harmonious alliance between the schools made the sports day fair and fun.

3. A calm and balanced connection between different parts of a system.

The garden showed a harmonious alliance between flowers and bees.

4. A formal agreement between nations to keep peace and help each other.

The leaders signed a harmonious alliance to protect the river that crossed both countries.