enemy
noun
[ ˈɛnəmi ]
• a person who is actively opposed or hostile to someone or something.
• "the traditional enemies of his tribe"
Similar:
foe,
adversary,
opponent,
rival,
nemesis,
antagonist,
combatant,
challenger,
competitor,
opposer,
hostile party,
the opposition,
the competition,
the other side,
the opposing side,
corrival,
vier,
Origin:
Middle English: from Old French enemi, from Latin inimicus, from in- ‘not’ + amicus ‘friend’.