Synonyms of the word

foe

• adj. (obsolete) Hostile.
• n. An enemy.
• n. A unit of energy equal to 10⁴⁴ joules.

adversary

• n. An opponent or rival.

antagonist

• n. An opponent or enemy.
• n. One who antagonizes or stirs.
• n. (biochemistry) A chemical that binds to a receptor but does not produce a physiological response, blocking…
• n. The main character or force opposing the protagonist in a literary work or drama.
• n. (anatomy) A muscle that acts in opposition to another.

challenger

• n. One who challenges.

competition

• n. (uncountable) The action of competing.
• n. (countable) A contest for a prize or award.
• n. (uncountable, collectively) The competitors in such a contest.

competitor

• n. A person or organization against whom one is competing.
• n. A participant in a competition, especially in athletics.

contender

• n. Someone who competes with one or more other people.
• n. Someone who has a viable chance of winning a competition.

enemy

• n. Someone who is hostile to, feels hatred towards, opposes the interests of, or intends injury to someone…
• n. A hostile force or nation; a fighting member of such a force or nation.
• n. An alliance of such forces.
• n. Something harmful or threatening to another.
• adj. of, relating to, or belonging to an enemy.

foeman

• n. An enemy; a foe in battle; an armed or unarmed adversary; a demon.

opponent

• n. An individual or group who is a rival of another.
• n. One who attempts to stop the progression of.
• n. One who objects to.
• n. In team sports, a player of an opposite team.
• adj. Situated in front; opposite; hence, opposing; adverse; antagonistic.

opposer

• n. One who opposes, one who shows opposition.

opposition

• n. The action of opposing or of being in conflict.
• n. An opposite or contrasting position.
• n. (astronomy) The apparent relative position of two celestial bodies when one is at an angle of 180 degrees…
• n. (politics) A political party or movement opposed to the party or government in power.
• n. (law) In United States intellectual property law, a proceeding in which an interested party seeks to prevent…
• n. (chess) A position in which the player on the move must yield with his king allowing his opponent to advance…

resister

• n. Alternative form of resistor.

rival

• n. A competitor (person, team, company, etc.) with the same goal as another, or striving to attain the same…
• n. Someone or something with similar claims of quality or distinction as another.
• n. (obsolete) One having a common right or privilege with another; a partner.
• adj. Having the same pretensions or claims; standing in competition for superiority.
• v. (transitive) To oppose or compete with.
• v. To be equal to or to surpass another.
• v. To strive to equal or excel; to emulate.