清

Used in letters to celebrate the health and happiness of the addressee

gentle and pure

Medicine

serotype; serovar

(your) good health

street cleaner; garbage man

clearing of the river water

pure love; platonic love

(another's) well-being

serology

tomb sweeping festival (Okinawa, April 4 or 5)

Qing-era Chinese music (popularized in Japan during the early 19th century)

Ming and Qing-era Chinese music (as popularized in Japan before the First Sino-Japanese war)

elegance

purifying salt (thrown in the sumo ring before a bout, after funerals, etc.)

happiness

Shinto

purification ritual

style of jōruri narrative performance

Printing

seichōtai; typeface which resembles brush-stroke forms of characters

adjustor; liquidator

liquidation statement or account

Linguistics

voiceless consonant

water purifier

Medicine

serum sickness

pure heart; heart free of evil

Mahjong

one's hand being completely concealed; not having called any tiles