multilateral

adjective

mul·​ti·​lat·​er·​al ˌməl-tē-ˈla-t(ə-)rəl How to pronounce multilateral (audio)
-ˌtī-
Synonyms of multilateralnext
1
: having many sides
2
: involving or participated in by more than two nations or parties
multilateral agreements
multilateralism noun
multilateralist noun
multilaterally adverb

Did you know?

Since lateral means "side", multilateral means basically "many-sided". The philosophy of multilateralism claims that the best solutions generally result when as many of the world's nations as possible are involved in discussions, and multilateralists often favor strengthening the United Nations. Today multilateralism can be seen at work in, for example, the World Health Organization, the World Trade Organization, and the International Criminal Court. But the U.S. doesn't always join the major multilateral organizations, instead often behaving as if a unilateral approach—that is, going it alone—was best for the interests of a powerful nation.

Examples of multilateral in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
European resistance sharpens questions over legitimacy But conversations at Davos and beyond this week also underscored resistance from some European governments, raising questions about the board's legitimacy, leadership structure, and relationship to existing multilateral institutions. Willem Marx, NPR, 22 Jan. 2026 Rwanda, for its part, is already engaging with international partners and structuring mixed financing approaches that combine public, private, and multilateral sources. Ken Silverstein, Forbes.com, 22 Jan. 2026 The multilateral institutions on which the middle powers have relied — the WTO, the UN, the COP — the architecture, the very architecture of collective problem solving are under threat. Haley Ott, CBS News, 21 Jan. 2026 The inaugural World Laureates Summit will be held alongside the World Government Summit, bringing 200 of the world’s top researchers into the orbit of presidents, prime ministers, multilateral leaders, and business executives. Mohammed Sergie, semafor.com, 16 Jan. 2026 See All Example Sentences for multilateral

Word History

First Known Use

1606, in the meaning defined at sense 1

Time Traveler
The first known use of multilateral was in 1606

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Cite this Entry

“Multilateral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/multilateral. Accessed 28 Jan. 2026.

Kids Definition

multilateral

adjective
mul·​ti·​lat·​er·​al ˌməl-ti-ˈlat-ə-rəl How to pronounce multilateral (audio)
-ˌtī-
-ˈla-trəl
1
: having many sides
2
: involving or taken part in by more than two nations or groups
a multilateral treaty
multilaterally
adverb

More from Merriam-Webster on multilateral

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