Koreans use it to politely point out a mistake.
Yes. "틀렸어요 (teullyeosseoyo)" is polite and gentle. You can also say "틀려 (teullyeo)" casually.
You can say "That's wrong, it's actually..." — 틀렸어요, 사실은... (teullyeosseoyo, sasil-eun...).
틀렸어요 means "That's wrong." 틀리다 (teullida) = to be wrong/incorrect, 었어요 (eosseoyo) = past polite. Polite way to point out a mistake in class, work, or conversation. Maintains harmony, shows consideration.
1. Class/work: Give feedback kindly.
2. Learning: Correct answer.
3. Friends: Gentle correction.
That's wrong. This is correct.
That's wrong. Please check again. (Formal)
That's wrong. Try again. (Casual)
Ah, it's wrong. Sorry.
• 맞았어요 (majasseoyo) - That's correct
• 아니에요 (anieyo) - It's not
• 다시 해 보세요 (dasi hae boseyo) - Try again