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.
James argued that without safeguards, digital assets could undermine U.S. dollar dominance, weaken national security if individuals anonymously finance criminal operations and fund adversarial regimes, and subject investors to price manipulation in rigged markets. Ashleigh Fields, The Hill, 11 Apr. 2025 Some also argue that Cyber Command isn't able to carry out as many offensive strikes over fears that doing so will burn whatever covert operations the NSA is carrying out on adversarial networks. Sam Sabin, Axios, 8 Apr. 2025 Doshi noted that making a model safe and ready for wide release involves adversarial testing and lots of hands-on time. ArsTechnica, 4 Apr. 2025 The Shift To Adversarial Exposure Validation Solutions To bridge the gap between point-in-time security testing and real-world attack simulation, enterprises are embracing adversarial emulation and solutions that support efficient threat management. Seemant Sehgal, Forbes.com, 4 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 21 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!