antagonist

As an adjective synergistic

is of or pertaining to synergy or synergism; co-operative, working together, interacting, mutually stimulating.

As a noun antagonist is

antagonist (all senses).

As a noun antagonist

is antagonist (all senses).

As an adjective contentious is

marked by heated arguments or controversy.

As nouns the difference between antihero and antagonist

is that antihero is a protagonist who proceeds in an unheroic manner, such as by criminal means, via cowardly actions, or for mercenary goals while antagonist is an opponent or enemy.

As nouns the difference between antagonist and null

is that antagonist is antagonist (all senses) while null is zero, nil; the cardinal number before einn.

As nouns the difference between nonprotagonist and antagonist

is that nonprotagonist is one who is not a protagonist while antagonist is an opponent or enemy.

As nouns the difference between antagonist and inhibitor

is that antagonist is an opponent or enemy while inhibitor is any substance capable of stopping or slowing a specific chemical reaction.

As nouns the difference between villian and antagonist

is that villian is while antagonist is antagonist (all senses).

Antagonist is a synonym of toe.

As a noun antagonist

is antagonist (all senses).

As a pronoun toe is

.

As nouns the difference between animosity and antagonist

is that animosity is violent hatred leading to active opposition; active enmity; energetic dislike while antagonist is an opponent or enemy.

Contender is a related term of antagonist.

As nouns the difference between contender and antagonist

is that contender is someone who competes with one or more other people while antagonist is antagonist (all senses).