antagonism (n.)

  1. a state of deep-seated ill-will

    [ Syn: hostility , enmity ]

  2. the relation between opposing principles or forces or factors; the inherent antagonism of capitalism and socialism'

  3. an actively expressed feeling of dislike and hostility

  4. (biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure

The dictionary is based on the WordNet Electronic Lexical Database.
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