- 清水【しみず】 - spring water, clear (pure) water 
- 清潔【せいけつ】 - clean, hygienic, sanitary, pure, virtuous, immaculate 
- 清掃【せいそう】 - cleaning, clean-up, garbage collection, scavenging 
- 清算【せいさん】 - (financial) settlement, squaring accounts, clearing debts, liquidation, ending (a relationship), breaking up (with), burying (the past), redeeming (one's faults) 
- 清らか【きよらか】 - clean, clear, pure, honest, clean, innocent, platonic, chaste 
- 清い【きよい】 - clean, clear, pure, honest, clean, innocent, platonic, chaste 
- 粛清【しゅくせい】 - (political) purge 
- 清澄【せいちょう】 - clear, serene 
- 清廉【せいれん】 - honest, upright, cleanhanded, unselfish 
- 清新【せいしん】 - fresh, new 
- 清涼【せいりょう】 - cool, refreshing 
- 清流【せいりゅう】 - clear stream 
- 清酒【せいしゅ】 - refined sake 
- 清貧【せいひん】 - honourable poverty, honorable poverty 
- 清浄【せいじょう】 - pure, clean, purity 
- 清朝【しんちょう】 - Qing dynasty (of China; 1644-1912), Ch'ing dynasty, Manchu dynasty, seichōtai, typeface which resembles brush-stroke forms of characters 
- 清涼飲料水【せいりょういんりょうすい】 - soft drink 
- 清風【せいふう】 - breath of fresh air, cool (refreshing) breeze 
- 血清【けっせい】 - serum, blood serum 
- 清明【せいめい】 - pure and clear, "clear and bright" solar term (approx. April 5)