This is the 6560th most frequent Japanese word.
ツルツル
Smooth, slick, or slippery.
ツルツル is used to describe the smooth and slippery texture of the floor.
この床はツルツルで滑りやすいです。
This floor is slippery and easy to slide on.
ツルツル is used to describe the smooth and silky texture of someone's skin.
ツルツルした肌が羨ましいです。
I envy smooth and soft skin.
ツルツル is used to describe the smooth and gliding motion of the udon while being swallowed.