from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Hostility that results in active resistance, opposition, or contentiousness. See Synonyms at enmity.
- n. The condition of being an opposing principle, force, or factor: the inherent antagonism of capitalism and socialism.
- n. Biochemistry Interference in the physiological action of a chemical substance by another having a similar structure.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A strong natural dislike or hatred; antipathy.
from the GNU version of the Collaborative International Dictionary of English
- n. Opposition of action; counteraction or contrariety of things or principles.
from The Century Dictionary and Cyclopedia
- n. The state of being mutually opposed; mutual resistance or opposition of two forces in action; contrariety of things or principles.
- n. The act of antagonizing; opposition.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an actively expressed feeling of dislike and hostility
- n. a state of deep-seated ill-will
- n. the relation between opposing principles or forces or factors
- n. (biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure
From Ancient Greek ἀνταγωνιστής ("opponent"), from ἀνταγωνίζεσθαι ("antagonize"), from Ancient Greek ἀγών ("contest") (English agon). (Wiktionary)