Meanings
① It looks sophisticated without being superfluous.
② Pleasant and hassle-free conditions.
③ Refreshing mood or taste.
Examples
① Apple’s products are simple and cool in design.
Apple社の製品は、デザインがすっきりしていてかっこいい。
② I divorced a sloppy husband. I was happy to see the back of him.
だらしない亭主と離婚ができて、すっきりした。
③ I shampooed and my scalp was clean and refreshed.
シャンプーをしたので、頭皮がすっきりきれいになった。
Dogmatic Opinion
Refreshing and stylish are the closest words.
There is no unpleasant feeling that lingers afterwards.
The appearance of feeling good without excess or concern Also used for food that makes you feel that way.
Proximate Expression
refresh
clear
neat and clean
get off one’s chest