Definitions

1. adjective

Having or displaying aggressive or competitive behavior, especially in social or sexual contexts.

“The agonistic displays of the birds during mating season are an impressive spectacle.”

2. noun

A behavior or display in which an individual, especially an animal, shows aggressive or competitive tendencies in order to establish dominance or attract a mate.

“The agonistic behavior of the male wasp was an attempt to defend its territory from the intruder.”