Synonyms for Foe:

n.

archrival, sworn, deadly enemy/foe/rival. greenpeace, ecologist, love, Friends of the Earth, environmentalist, conservationist, conservancy, the Green Party, nemesis, green. combatant (noun)
contestant, bruiser, fighter, thug, opponent, pugilist, competitor, bully, brawler, militant, rival, enemy, rioter, assailant, battler, combatant, struggler, soldier, mercenary, antagonist, warrior, gladiator, duelist, man-at-arms, tough, swordsman, Jouster, quarreler, adversary.
enemy (noun)
opposition, unfriendly, attacker, opposite, Archenemy, invader, savage, sectarian, sanguinary, Sectary, shrew.
foe (noun)
foeman, enemy, opposition.
opponent (noun)
disputant, foil, villain, assaulter, opposer.
person (noun)
foeman, enemy, opposition.
person who is an opponent (noun)
adversary, enemy, rival, antagonist.

Other synonyms:

environmentalist, sworn, the Green Party, conservationist, nemesis, archrival, greenpeace, Friends of the Earth. conservancy, ecologist. green. Other relevant words:
environmentalist, nemesis, foeman, conservancy, sworn, green, greenpeace, conservationist, ecologist.

Usage examples for foe

  1. Suddenly the foe broke in upon them, upon which they calmly asked for leave to finish their interesting match. – A Holiday in the Happy Valley with Pen and Pencil by T. R. Swinburne
  2. He had lost consciousness on the banks of the Thames, and during a fierce struggle with a treacherous foe – The Mandarin's Fan by Fergus Hume
  3. He was surprised by the foe three of his men killed, and he and six others wounded, besides losing a number of his weapons. – The Old Franciscan Missions Of California by George Wharton James