experiment    ukugerageza
(to) kugerageza
En-En dictionary 
ukugerageza   9  class 9
singular: uku-
  
1. effort, 2. attempt, endeavor, 3. experiment
kugerageza (-gerageje)     v    1. to tempt, attempt, 2. to experiment, to try, to try out, 3. to make an effort