1. Adverb (fukushi), Adverb taking the 'to' particle, Suru verb

   refreshingly; with a feeling of relief; pleasantly; (a weight) off one's shoulder

   Onomatopoeic or mimetic wordsee さっぱり

   一杯のコーヒーを飲んだら頭がすっきりした。

2. shapely; neatly; refinedly

3. cleanly; without trouble

4. clearly; plainly; distinctly

   see はっきり

5. completely; thoroughly

   see すっかり

6. not at all (with negative sentence); not even slightly

   see さっぱり

Also written スッキリsukkiri