antagonist

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Related to antagonistic: antagonistic effect, antagonistic muscles

antagonist

1. any muscle that opposes the action of another
2. a drug that counteracts the effects of another drug

antagonist

[an′tag·ə‚nist]
(biochemistry)
A molecule that bears sufficient structural similarity to a second molecule to compete with that molecule for binding sites on a third molecule.
(pharmacology)
A drug or other chemical substance capable of reducing the physiological activity of another chemical substance; refers especially to a drug that opposes the action of a drug or other chemical substance on the nervous system by combining with and blocking the nerve receptor.
(physiology)
A muscle that contracts with, and limits the action of, another muscle, called an agonist, with which it is paired.
References in classic literature ?
Her feeling that he was antagonistic to her, which had lapsed while she thought of her family possessions, returned so keenly that she stopped in the middle of her catalog and looked at him.
And if he were a philosopher of the eristic and antagonistic sort, I should say to him: You have my answer, and if I am wrong, your business is to take up the argument and refute me.
Nor had those antagonistic forces been dormant, which are always at work wearing down the surface of the land; the great piles of strata had been intersected by many wide valleys, and the trees now changed into silex, were exposed projecting from the volcanic soil, now changed into rock, whence formerly, in a green and budding state, they had raised their lofty heads.
In 1756 he began his career as an author with 'A Vindication of Natural Society,' a skilful satire on the philosophic writings which Bolingbroke (the friend of Swift and Pope) had put forth after his political fall and which, while nominally expressing the deistic principles of natural religion, were virtually antagonistic to all religious faith.
For during the whole time of their being together they luxuriate in telling one another their minds on whatever subject turns up; and their minds are wonderfully antagonistic, and all their opinions are downright beliefs.
Are antagonistic ideas then to be reconciled more easily--can they be cemented with blood and violence into that concord which you proclaim to be so near?"
I know no medium: I never in my life have known any medium in my dealings with positive, hard characters, antagonistic to my own, between absolute submission and determined revolt.
Describing such frenzy of human destruction, violent attacks on people and property in the communities by the warring parties as unacceptable, the President said the Federal Government will not sit idly and watch the deep-seated antagonistic relationship between the Tiv and Jukun people fester.
While the US Coast Guard's presence is outnumbered by a large number of Chinese Coast Guard ships in the region, Schultz said they are working to be the 'partner of choice in the region' by offering 'transparent engagement and partnership' amid 'coercive and antagonistic behavior.'
US calls for int'l pushback vs aggressive sea acts !-- -- Neil Jayson Servallos (The Philippine Star) - July 24, 2019 - 12:00am MANILA, Philippines The United States has called on claimant states in the South China Sea to spurn antagonistic behavior that does not follow international protocol, given China's "gross" manifestation of its forces in the disputed waters.
The Art of Working with Anxious, Antagonistic Adolescents: Ways Forward for Frontline Professionals
It noted that Islamabad and New Delhi were 'long among the world's most antagonistic neighbours' and that it was fortunate they found 'the good sense to de-escalate'.