1. antagonist - Noun
2. antagonist - Adjective
One who contends with another, especially in combat; an adversary; an opponent.
A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it.
A medicine which opposes the action of another medicine or of a poison when absorbed into the blood or tissues.
Antagonistic; opposing; counteracting; as, antagonist schools of philosophy.
Source: Webster's dictionaryHe that struggles with us strengthens our nerves, and sharpens our skill. Our antagonist is our helper. Edmund Burke
This is the heart of my argument: We can put more pressure on the antagonist for whom we show human concern. Barbara Deming
In matching your wits against yourself you take on the shrewdest and wiliest antagonist you can have, and consequently a victorious outcome in this duel of wits brings a great feeling of triumph. Dorothea Brande
There are few situations in life that cannot be resolved promptly, and to the satisfaction of all concerned, by either suicide, a bag of gold, or thrusting a despised antagonist over a precipice on a dark night. Ernest Bramah
We honor revelation too highly to make it the antagonist of reason, or to believe that it calls us to renounce our highest powers. William Ellery Channing
In all debates let truth be thy aim; not victory or an unjust interest; and endeavor to gain rather than to expose thy antagonist. William Penn