noun
an individual or group that is hostile toward another
the senator was blackmailed by a political enemy
Synonyms: foe
Related Word: adversary, antagonist, opponent; assailant, attacker, combatant, invader; competitor, contender, emulator, rival
Contrasted words: benefactor, friend, supporter; ally, collaborator, colleague, confederate, friendly; adherent, follower, partisan, upholder