What is the Opposite Word of Friend?

Depending on the exact context of your sentence, you can use several different words that mean the opposite of a friend:

1. Enemy: The most common word. Someone who actively hates you and tries to harm you.
2. Foe: An older, highly formal, or poetic word for an enemy. (e.g., 'Friend or foe?').
3. Rival: Someone you are competing against (like in sports or business). A rival is not always an evil enemy; they just want to win against you.
4. Adversary: A highly formal word used in legal or military contexts for an opponent.

• English: The two countries used to be great friends, but now they are bitter enemies.
• English: In the final chess tournament, he had to play against his greatest rival.
• English: A true hero shows no fear when facing a dangerous foe.

In modern internet culture, there is a very famous slang word called 'Frenemy' (a combination of Friend + Enemy). This refers to someone who pretends to be your sweet friend to your face, but secretly hates you or constantly competes with you behind your back.