multilateral
adj.adj. involving more than two groups or countries. You use this to describe agreements or talks where many different sides work together.
adj. involving or participated in by three or more parties, especially the governments of different countries. Often used to describe diplomatic negotiations or trade agreements.
The countries signed a multilateral trade agreement.
The climate summit is a multilateral effort to reduce global carbon emissions through shared goals.
Diplomats argued that a multilateral approach was the only viable path toward regional stability, as bilateral agreements often ignored the security concerns of neighboring states.
From multi- + lateral.
Typically used attributively before a noun; often contrasted with 'bilateral' or 'unilateral'.