Part of speech:
One that opposes another or others, as in a battle, contest, or debate:
A muscle that opposes the action of another muscle, as by relaxing while the other one contracts, thereby producing smooth, coordinated movement.
A person who competes; rival
A personal enemy or opponent.
A hostile power or force, such as a nation.
(Informal) A person opposed to some policy, proposal, action, etc.
The definition of an assailant is a person who attacks and harms another physically or verbally.
The female of various other mammals, such as antelopes, kangaroos, mice, or rabbits.
Foil is defined as a thin piece of metal, or a sword used in fencing.
Satan is the Devil.
A member of the Society of Friends; a Quaker.
Ally is defined as an individual, country or organization that unites with another.
(Sports) Someone who is a fan of a certain team or sportsperson.
The definition of an assistant is a person in a work setting who is inferior in rank and whose job it is to perform duties for someone else.
One that backs a person, group, or enterprise:
(Logic) The relation of exclusion or inclusion which exists between propositions having the same subject and predicate but differing in quality, quantity, or both
A member of an opposition.
A person who fights against a government.
A substance that resists, esp. something applied as a protective coating
Financial or other help.
Find another word for adversary. In this page you can discover 32 synonyms, antonyms, idiomatic expressions, and related words for adversary, like: opponent, antagonist, competitor, foe, enemy, rival, See syn. study at, adversarial, anti, assailant and disputant.