adversarial

adjective

ad·​ver·​sar·​i·​al ˌad-vər-ˈser-ē-əl How to pronounce adversarial (audio)
ˌad-və-,
-ˈse-rē-
: involving two people or two sides who oppose each other : of, relating to, or characteristic of an adversary or adversary procedures (see adversary entry 2 sense 2)
an adversarial relationship
an adversarial system of justice with prosecution and defense opposing each other

Examples of adversarial in a Sentence

an adversarial system of justice with prosecution and defense opposing each other the relationship between the president and the congress should not be adversarial if anything is to get done
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.
But school officials across the country worry that making lawsuits for damages easier to win will create a more adversarial relationship between parents and schools in the difficult negotiations needed to balance a student’s needs with a school’s limited resources. Maureen Groppe, USA Today, 28 Apr. 2025 The result is a riveting one-man-army showdown that doubles as a powerful statement on the need for collective action against adversarial forces. Samantha Bergeson, IndieWire, 25 Apr. 2025 American film critics were beginning to adopt a more adversarial philosophy, influenced by the auteur theory calcified in Cahiers du cinéma magazine. J. Kim Murphy, Variety, 24 Apr. 2025 These could take the form of a large array of satellites or clusters of satellites that would be resilient to Chinese attack, especially when augmented by large numbers of uncrewed aerial vehicles that can detect adversarial forces and serve as nodes for communication. Andrew S. Lim, Foreign Affairs, 22 Apr. 2025 See All Example Sentences for adversarial

Word History

First Known Use

1839, in the meaning defined above

Time Traveler
The first known use of adversarial was in 1839

Browse Nearby Words

Cite this Entry

“Adversarial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/adversarial. Accessed 30 Apr. 2025.

Kids Definition

adversarial

adjective
ad·​ver·​sar·​i·​al
ˌad-vər-ˈser-ē-əl
: involving two people or two sides who oppose each other

Legal Definition

adversarial

adjective
ad·​ver·​sar·​i·​al ˌad-vər-ˈser-ē-əl How to pronounce adversarial (audio)
: of, relating to, or characteristic of an adversary or adversary procedures : adversary

More from Merriam-Webster on adversarial

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!