Antagonism may refer to: *The characteristic of an

antagonist An antagonist is a character in a story who is presented as the main enemy or rival of the protagonist and is often depicted as a villain.Antagonism (chemistry) Chemical antagonists impede the normal function of a system. They function to invert the effects of other molecules. The effects of antagonists can be seen after they have encountered an agonist, and as a result, the effects of the agonist is neut ...

, where the involvement of multiple agents reduces their overall effect *

Drug antagonism Drug antagonism refers to a medicine stopping the action or effect of another substance, preventing a biological response. The stopping actions are carried out by four major mechanisms, namely chemical, Pharmacokinetics, pharmacokinetic, Receptor a ...

, a drug that stops the action or effect of another substance, preventing a biological response ** Receptor antagonism or pharmacological antagonism, the action of a drug that inhibits the function of an agonist at the level of a receptor *

Antagonism (phytopathology) Antagonism (in phytopathology) occurs when one organism inhibits or slows down the growth of a plant disease-causing organism, such as harmful bacteria or fungi. Most plants can host a variety of pathogens and are often infected by multiple specie ...

, an effect that suppresses the activity of a plant pathogen *

Reflexive antagonism Reciprocal inhibition is a neuromuscular process in which muscles on one side of a joint relax to allow the contraction of muscles on the opposite side, enabling smooth and coordinated movement. This concept, introduced by Charles Sherrington, ...

of muscles *

Intraspecific antagonism Intraspecific antagonism means a disharmonious or antagonistic interaction between two individuals of the same species. As such, it could be a sociology, sociological term, but was actually coined by Alan Rayner and Norman Kalmer Todd, Norman Todd ...

, disharmonious or antagonistic interaction between two individuals of the same species

See also