When to use to be smooth in Korean
Korean: 매끄럽다[ mae-kkeu-reop-da ]

When to use it
매끄럽다 means something is smooth, with no rough parts or bumps. You can use it for things you touch, like skin, wood, or a road. It can also describe movement, speech, or an event that happens smoothly without problems.
Example sentences
이 책상은 매끄러워요.
This desk is smooth.
아기 피부가 정말 매끄러워요.
The baby's skin is very smooth.
새 길이 매끄러워서 자전거 타기 좋아요.
The new road is smooth, so it is good for riding a bike.
오늘 발표가 아주 매끄러웠어요.
Today's presentation was very smooth.
이 가방 가죽이 매끄러워요.
The leather of this bag is smooth.
비행기 착륙이 매끄러웠어요.
The plane landing was smooth.