IPA: //mʌlˈtɪl.ə.rəl.ɪst//
KK: /mʌlˈtɪl.ə.rəl.ɪst/
Relating to or supporting multiple countries or parties working together on a common issue.
The multilateralist approach aims to foster cooperation among various nations to address global challenges.
A person who supports or advocates for involving several countries or groups in discussions or agreements, especially in international relations.
As a multilateralist, she believes that cooperation among many nations is essential for global peace.
Multilateralist → It is formed from "multi-" (meaning many) and "lateral" (from Latin "lateralis", meaning side). The term refers to someone who supports or advocates for multiple sides or parties in international relations.
Think of 'many' ('multi-') sides ('lateral') working together — that's what a multilateralist supports.