adversary

noun
ad·ver·sary | \ ˈad-vər-ˌser-ē , ˈad-və- , -ˌse-rē \
plural adversaries

Definition of adversary 

(Entry 1 of 2)

: one that contends with, opposes, or resists : an enemy or opponent a clever adversary

adversary

adjective

Definition of adversary (Entry 2 of 2)

1 : of, relating to, or involving an enemy or adversary

2 : having or involving antagonistic parties or opposing interests Divorce can be an adversary proceeding.

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Other words from adversary

Noun

adversariness noun

Did You Know?

Noun

If you've ever had someone turn on you and become your adversary, you've inadvertently lived out the etymology of adversary. The word is from the Latin adjective adversarius ("turned toward" or "antagonistic toward"), which in turn can be traced back to the verb advertere, meaning "to turn to." "Advertere" itself derives from ad- and vertere ("turn"), and "vertere" is the source of a number of English words. Along with obvious derivatives like "inadvertently" and "adverse" are some surprises, such as "anniversary," "prose," and "vertebra," among others.

Examples of adversary in a Sentence

Noun

He's a very smart criminal who pushes emotional buttons to get what he wants. He's quite a worthy adversary for Mac and the team. TV Guide, 2-8 June 2008 American diplomacy after World War II exemplified the soundness of this principle. We put our power at the disposal of all who cherished freedom and peace. We did things for others they couldn't do for themselves. We defended others, yes, but we also forgave our former enemies and helped reconcile old adversaries, such as France and Germany. —Colin L. Powell, Wilson Quarterly, Summer 2004 Nike's adversary was an amorphous group of disgruntled consumers connected by a decentralized network of e-mail addresses. Although the press has presented my battle with Nike as a David versus Goliath parable, the real story is the battle between a company like Nike, with access to the mass media, and a network of citizens on the Internet … —Jonah Peretti, Nation, 9 Apr. 2001 Not perfected until the eve of World War I, this small boat cruised on the surface with a diesel engine that also charged the batteries that powered the submarine's electric motors for submerged operation. If it spotted an adversary, the submarine would dive, either to escape or attack. —Archer Jones, Elements of Military Strategy, 1996 His political adversaries tried to prevent him from winning the nomination. our old cat seemed to consider the new kitten an adversary

Adjective

The quest for air superiority would come to include strikes on adversary airfields, but only as part of a larger effort also involving such staples as defensive fighter interception, offensive air sweeps, and escort missions with bombers designed to draw enemy fighters into battle. —John Prados, MHQ : The Quarterly Journal of Military History, Spring 1996 Critics of military justice complain that it is not a true adversary system because the JAG has authority over judges, prosecutors and defense attorneys and controls the funds of each. —Fred Strasser, National Law Journal, 4 Mar. 1991 there was a long history of adversary dealings between the two nations
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Recent Examples on the Web: Noun

Espousing love between their two countries, the leaders of longtime adversaries Ethiopia and Eritrea agreed Sunday to restore diplomatic relations after nearly 20 years and to open the border between their neighboring Horn of Africa countries. Elias Meseret, The Christian Science Monitor, "Ethiopia and Eritrea unite after ending 20-year border war," 9 July 2018 Drug companies are confronting two sets of adversaries. Jef Feeley, Bloomberg.com, "Drugmakers Balk Now at Multibillion Dollar Opioid Accord," 3 May 2018 Fletcher, who admittedly has shot at people in the past, has a lot of adversaries, Emond said. Ashley Remkus, AL.com, "Man on trial for capital murder in shooting that killed teen, injured woman," 17 Apr. 2018 The former Speaker of the U.S. House of Representatives, Boehner was one of President Barack Obama's chief adversaries, but softened later in his tenure… Joining Boehner in Congress is former MLB baseball pitcher turned politician Bunning. Matthew Glenesk, Indianapolis Star, "IndyStar 2018 NCAA tournament celebrity alumni bracket," 12 Mar. 2018 California Attorney General Xavier Becerra, one of Trump's most prominent legal adversaries, said the White House's procedural missteps reflect its inability to follow the rules. Suzy Khimm, NBC News, "Critics tap decades-old law to stall Trump bid to undo Obama regulations," 5 Mar. 2018 The company has been the leading adversary of Mr. Musk in the fight against Tesla’s efforts to sell directly to customers without the use of the independent dealers that are legally mandated for auto makers. John D. Stoll, WSJ, "Tesla’s Musk Needs to Find His Mary Barra," 13 July 2018 The documents shared by the hacker weren’t marked as classified but could be used by an adversary to evaluate the capabilities and potential weaknesses of the Reaper drone, Recorded Future said. Dustin Volz, WSJ, "Stolen U.S. Military Drone Documents Found for Sale on Dark Web, Researchers Say," 11 July 2018 The only question in my mind is whether the United States will achieve that dominance before an adversary does. Henry Obering Iii, Fortune, "I Used to Direct the Missile Defense Agency. America Needs New Weapons," 5 July 2018

Recent Examples on the Web: Adjective

In the story's boldest stroke of gallows humor, Joe and a fallen adversary croon softly together to a song on the radio, two souls improbably united by the strange, terrible intimacy of professional murder. Justin Chang, latimes.com, "Joaquin Phoenix descends into a hellish New York underworld in the haunting 'You Were Never Really Here'," 5 Apr. 2018 At the same time, Trump's tirades against trade deals with nations like China played into a belief among many people that such pacts had hollowed out the American dream, while building middle classes lives for citizens of adversary nations. Stephen Collinson, CNN, "Private jets scandal, tax plan test Trump's brand," 28 Sep. 2017 In oral arguments via telephone Tuesday, a panel of three appellate judges pressed both Purcell and adversary August Flentje, special counsel to the assistant U.S. attorney general, for additional evidence to back up their claims. Marisa Kendall, The Mercury News, "Trump travel ban case: States to file more evidence of ban’s harm," 9 Feb. 2017 The measure would bar the Pentagon from buying satellite services if there is a threat that they could be compromised by cyber vulnerabilities or because they are launched by or contained parts from adversary nations. John M. Donnelly, The Seattle Times, "House defense panel would create space combat force," 20 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'adversary.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of adversary

Noun

14th century, in the meaning defined above

Adjective

14th century, in the meaning defined at sense 1

History and Etymology for adversary

Noun

Middle English, borrowed from Anglo-French & Latin; Middle English adversaire, adversarie, borrowed from Anglo-French adverser, adverserie, borrowed from Latin adversārius, noun derivative from adversārius "opposed (to), inimical, adverse," from adversus "turned toward, facing" + -ārius -ary entry 2 — more at adverse

Adjective

earlier, "opposed, antagonistic," going back to Middle English adversarie, borrowed from Anglo-French & Latin; Anglo-French, borrowed from Latin adversārius — more at adversary entry 1

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Statistics for adversary

Last Updated

22 Sep 2018

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Time Traveler for adversary

The first known use of adversary was in the 14th century

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More Definitions for adversary

adversary

noun
ad·ver·sary | \ ˈad-vər-ˌser-ē \
plural adversaries

Kids Definition of adversary

adversary

noun
ad·ver·sary | \ ˈad-vər-ˌser-ē \

Legal Definition of adversary 

(Entry 1 of 2)

: one that contends with or opposes another especially : any of the opposing parties in a legal action

adversary

adjective

Legal Definition of adversary (Entry 2 of 2)

: of, relating to, or involving opposing parties or interests specifically : of, relating to, or involving a system of justice in which opposing parties usually represented by counsel present evidence to an impartial decision-maker (as a jury) by a process of questioning witnesses under the supervision of a judge — compare accusatorial, inquisitorial

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