こする
擦る
kosuru

Godan Verb (ru)

1. to rub; to scrub; to scrape

Transitive
Usually Written in Kana
せっけんをけてごしごしこすればよごれがちます。
sekken'o tsukete goshigoshi kosureba yogorega ochimasu.
Rub briskly with soap, and the stain will soon wash off.
Other forms: