antagonism meaning and definition

ANTAGONISM noun

Definition of antagonism (noun)

1. a state of deep-seated ill-will
   • synonyms: enmity, hostility
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