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Definitions

alliance

[uh-lahy-uhns] / əˈlaɪ əns /
NOUN
friendly association, agreement
Synonyms
STRONG
accord affiliation affinity betrothal bond coalition coherence collaboration collusion combination communion compact concord concurrence confederacy confederation congruity conjunction connection consanguinity cooperation engagement entente federation fraternization friendship interrelation kinship league marriage matrimony membership mutuality pact participation partnership relation support tie treaty union
Antonyms
STRONG
antagonism detachment disagreement disconnection discord disunity division divorce hatred opposition separation
WEAK
disunion estrangement hostility rebellion war

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For Europe, too, ending the alliance would be costly.

From The Wall Street Journal • Apr. 4, 2026

The FDA should forgo the usual human clinical trials in order to bring about this shift, a spokesperson for the alliance said.

From Salon • Apr. 4, 2026

Formal withdrawal from the 1949 treaty that created the alliance would be legally fraught.

From The Wall Street Journal • Apr. 4, 2026

Kristina Kausch, a researcher at the German Marshall Fund, said it would be an exaggeration to speak of the end of the alliance.

From Barron's • Apr. 3, 2026

However, in 1784, they turned to Spanish Florida for an alliance they hoped would stop the flow of squatters.

From "An Indigenous People’s History of the United States" by Roxanne Dunbar-Ortiz

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.