a person who feels hatred and tries or wishes to harm or attack
someone hated or competed against
Cases of word usage
1) to cause (a person) to become an enemy (antagonize)
2) be an enemy to (one's country etc) (betray)
3) things taken by robbers or captured from the enemy in war (booty)
4) (to make) an attack in reply to an attack by the enemy (counterattack)
5) an enemy (foe)
6) a secret word or phrase which enables a person to be recognized as a friend and not an enemy (password)
7) a person who cooperates with the enemy (quisling)
8) to go to or near (a place or area occupied by enemy forces) to learn about their position, strength etc (reconnoitre)
9) a sudden breaking out by soldiers who are surrounded by the enemy (sally)