Koreans use it to praise something impressive or wonderful.
Yes. "정말 멋져요 (jeongmal meotjyeoyo)" is polite and enthusiastic. You can also say "멋져 (meotjyeo)" casually.
You can say "That's really awesome" — 정말 멋져요 (jeongmal meotjyeoyo).
정말 멋져요 means "That's awesome / Really cool." 정말 (jeongmal) = really, 멋져요 (meotjyeoyo) = awesome/cool - polite. Popular way to compliment or show excitement when someone shows talent, shares good news, or creates something cool.
1. Compliment: Praise impressive work.
2. Reaction: Exciting news.
3. Encouragement: Build positive vibe.
That's awesome! How did you do it?
That's awesome, impressive. (Formal)
That's awesome! The best! (Casual)
Wow, that's awesome. I'm moved!
• 대박 (daebak) - Amazing / Wow
• 최고예요 (choegoyeyo) - It's the best
• 정말 좋아요 (jeongmal joayo) - That's great