antagonist

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antagonist

a person who opposes another, often in a hostile manner: The man was his antagonist in a duel.; an enemy, foe; the adversary of the hero or protagonist in a literary work
Not to be confused with:
adversary – a person, group, or force that opposes or attacks; opponent; enemy; foe; one who is an opponent in a contest; a contestant; one who fights determinedly and relentlessly: He was a worthy adversary.
adversity – catastrophe, disaster; trouble, misery; adverse fortune or fate; a condition marked by misfortune: In times of adversity, she crumbles.
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

an·tag·o·nist

 (ăn-tăg′ə-nĭst)
n.
1. One who opposes and contends against another; an adversary.
2. The principal character in opposition to the protagonist or hero of a narrative or drama.
3. Physiology A muscle that counteracts the action of another muscle, the agonist.
4. A drug or chemical substance that interferes with the physiological action of another, especially by combining with and blocking its receptor.

an·tag′o·nis′tic adj.
an·tag′o·nis′ti·cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

antagonist

(ænˈtæɡənɪst)
n
1. an opponent or adversary, as in a contest, drama, sporting event, etc
2. (Physiology) any muscle that opposes the action of another. Compare agonist1
3. (Pharmacology) a drug that counteracts the effects of another drug. Compare synergist1
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

an•tag•o•nist

(ænˈtæg ə nɪst)

n.
1. a person who is opposed to or competes with another; opponent; adversary.
2. (in drama or literature) the opponent of the hero or protagonist.
3. a muscle that acts in opposition to another. Compare agonist (def. 3).
4. a tooth in one jaw that articulates with a tooth in the other jaw.
5. a drug that counteracts the effects of another drug.
[1590–1600; < Late Latin < Greek]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

an·tag·o·nist

(ăn-tăg′ə-nĭst)
A muscle that resists or counteracts another muscle, as by relaxing while the opposite one contracts. Compare agonist.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

antagonist

an opponent in any kind of contest or conflict. Also called antipathist.
See also: Conflict
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antagonist - someone who offers oppositionantagonist - someone who offers opposition  
individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do"
dueler, duelist, dueller, duellist - a person who fights duels
foe, foeman, enemy, opposition - an armed adversary (especially a member of an opposing military force); "a soldier must be prepared to kill his enemies"
Luddite - any opponent of technological progress
withstander - an opponent who resists with force or resolution; "obstinate withstanders of innovation"
agonist - someone involved in a contest or battle (as in an agon)
2.antagonist - a muscle that relaxes while another contractsantagonist - a muscle that relaxes while another contracts; "when bending the elbow the triceps are the antagonist"
antagonistic muscle - (physiology) a muscle that opposes the action of another; "the biceps and triceps are antagonistic muscles"
3.antagonist - a drug that neutralizes or counteracts the effects of another drug
drug - a substance that is used as a medicine or narcotic
estrogen antagonist, tamoxifen - an antagonist for estrogen that is used in the treatment of breast cancer
narcotic antagonist - an antagonist used to counteract the effects of narcotics (especially to counteract the depression of respiration)
synergist - a drug that augments the activity of another drug
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

antagonist

noun opponent, rival, opposer, enemy, competitor, contender, foe, adversary He had never previously lost to his antagonist.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

antagonist

noun
One that opposes another in a battle, contest, controversy, or debate:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
خَصْم، مُعارِض
odpůrceprotivníksoupeř
modstander
andstæîingur
antagonizmassukelti priešiškumą
pretinieks

antagonist

[ænˈtægənɪst] Nantagonista mf, adversario/a m/f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

antagonist

[ænˈtægənɪst] n (= opponent, enemy) → antagoniste mf, adversaire mf
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

antagonist

nKontrahent(in) m(f), → Gegner(in) m(f), → Antagonist(in) m(f); (esp Pol) → Gegenspieler(in) m(f)
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

antagonist

[ænˈtægənɪst] nantagonista m/f
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

antagonist

(ӕnˈtӕgənist) noun
an opponent or enemy.
anˈtagonism noun
unfriendliness, hostility.
anˌtagoˈnistic adjective
anˌtagoˈnistically adverb
anˈtagonize, anˈtagonise verb
to make an enemy of (someone). You are antagonizing her by your rudeness.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.

an·tag·o·nist

a. antagonista, droga que neutraliza los efectos de otra.
English-Spanish Medical Dictionary © Farlex 2012

antagonist

n antagonista m; calcium — antagonista del calcio; CCR5 — antagonista del CCR5
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Nevertheless, this patient was treated by glucocorticoid and ambrisentan, an oral endothelin-receptor antagonist, and then her symptoms improved obviously meanwhile pulmonary systolic pressure decreased, which indicated PCH associated with CREST syndrome might response to oral drug therapy and avoid lung transplantation.
While the guidelines recommend against targeted therapies for RHC-confirmed PH, a trial of either a prostanoid or an endothelin-receptor antagonist is recommended for patients with confirmed PH and elevated pulmonary vascular resistance, normal pulmonary capillary wedge pressure, and related symptoms.

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