טָהֵר vb. be clean, pure
Qal
1. be clean, i.e. (miraculously) freed from leprosy by washing in the Jordan
2. be clean ceremonially
3. be clean morally
Pi.
1. cleanse, purify
2. pronounce clean, ceremonially
3. perform the ceremony of cleansing
Pu. a land not cleansed
Hithp.
1. purify oneself
2. present oneself for purification