"A man cannot be too careful in the choice of his ___": Wilde

• Pakistan and India, e.g.
• Adams and Jefferson, e.g.
• They may be bitter
• Antagonists
• Subjects of a Nixon list
• "Forgive your ___, but never forget their names": John F. Kennedy
• Some are sworn
• Parties far from festive
• Lex Luthor and Superman, e.g

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Enemy \En"e*my\, n.; pl. Enemies . [OF. enemi, F. ennemi, from L. inimicus; in- (negative) + amicus friend. See Amicable .] One hostile to another; one who hates, and desires or attempts the injury of, another; a foe; an adversary; as, an enemy of or to ...