purify    kwēza, guhumānura
(oneself) kwīsukura
En-En dictionary 
kwīsukura (-sukuye)   v    to wash, cleanse, purify oneself
guhumānura (-humānuye)     v    1. to purify, 2. make clean
kwēza (-ējeje)     v    1. to purify, to cleanse, 2. to make white (from kwera)