Foe

Definition:

(n.) One who entertains personal enmity, hatred, grudge, or malice, against another; an enemy.
(n.) An enemy in war; a hostile army.
(n.) One who opposes on principle; an opponent; an adversary; an ill-wisher; as, a foe to religion.
(v. t.) To treat as an enemy.

Compare foe with other words:

foe vs. villain

foe vs. stranger

archenemy vs. foe

enslaved vs. foe

foe vs. opponent

adversary vs. foe