icemezo (ivy-  4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
prove
icemezo c'ubwishu   phr    receipt, prove of payment
good    (the good) icīza
(adj.) -īza, nyāwo, nyāyo, nyāco etc.
(noun) inēza
(economy) icemezo co gufata ibintu
(to be good ostensibly but not really) kwīyorobeka
(to become good after being bad) gufūtānuka
(to make good) kuryōsha
En-En dictionary 
prove    kwāgiriza, kwerekana, guhinyuza, kujījūra
(that a drink is not poisoned) kurogoza
(to one that he's wrong) kujīnjibura
(a prove) icemezo
En-En dictionary 
receipt    icemezo cy'ubwishu
En-En dictionary