Antagonism
# Antagonism

Antagonism may refer to:

* The characteristic of an antagonist
* Antagonism (chemistry), where the involvement of multiple agents reduces their overall effect
* Receptor antagonist or pharmacological antagonist, a substance that binds to the site an agonist would bind to, without causing activation
* Antagonism (phytopathology), an effect that suppresses the activity of a plant pathogen
* Reflexive antagonism of muscles
* Intraspecific antagonism, disharmonious or antagonistic interaction between two individuals of the same species
