Koreans use it when they feel the amount or effort is already satisfactory.
Yes. "충분해요 (chungbunhaeyo)" is polite and natural. You can also say "충분해 (chungbunhae)" casually.
You can say "That's really enough" — 정말 충분해요 (jeongmal chungbunhaeyo).
충분해요 means "That's enough" or "It's sufficient." It's a polite way to tell someone you have enough quantity, help, food, or information and don't need more. It's very common in daily life, restaurants, and workplaces.
1. At a restaurant/cafe: When staff keeps giving side dishes.
2. When receiving help: To politely stop someone.
3. For time or explanation: When you already understand.
That's enough. Thank you.
Now it's enough.
This is enough. (Formal)
It's okay, that's enough now! (Casual)