The definition of an adversary is a person who fights against something or someone, or is a person who is considered to be a competitor or enemy.(noun)
For the character of Batman, the Joker is an example of an adversary.
Adversary is defined as anything related to a person, place, or thing where conflict is involved.(adjective)
An example of an adversary relationship is a couple who fight all the time.
See adversary in Webster's New World College Dictionary
noun pl. adversaries
Origin: ME < OFr adversarie < L adversarius < adversus, adverse
See adversary in American Heritage Dictionary 4
noun pl. ad·ver·sar·ies
Origin: Middle English adversarie
Origin: , from Latin adversārius, enemy
Origin: , from adversus, against; see adverse.
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