Koreans use it when seeing something adorable.
Yes. "귀여워요 (gwiyeowoyo)" is polite and warm. You can also say "귀여워 (gwiyeowo)" casually.
You can say "That's really cute" — 정말 귀여워요 (jeongmal gwiyeowoyo).
귀여워요 means "That's cute." 귀엽다 (gwiyeopda) = to be cute, 어요 (eoyo) = polite. Very common compliment for babies, animals, cute behaviors, fashion, pets.
1. Adorable things: Babies, pets.
2. Fashion: Cute outfit.
3. Behavior: Lovely action.
That's cute. Really lovely.
Really cute!
Really cute! (Casual)
Very cute. (Formal)
• 예뻐요 (yeppeoyo) - Pretty
• 사랑스러워요 (sarangseureowoyo) - Lovely
• 아름다워요 (areumdawoyo) - Beautiful