kubora (-boze)     v    to rot, spoil (vi)
 kubora : short form (without augment) of...
ukubora   9  class 9
singular: uku-
  
1. decay, 2. something rotten (from kubora)
caries    ukubungwa, ukubora kw'amenyo
En-En dictionary 
deteriorate    gufūtāna, gusērūka, kwōnōnekara, gushānyūka, gupfāpfāna, kubora
(to cause to) gusērūra
En-En dictionary 
gangrene    ukubora kw'igikomere
En-En dictionary 
rot    kubora, kuboza
En-En dictionary 
spoil    (to ~, vi) kubora, kwōnōna
(vt) kuboza
(of foods) kugāsha
(another's reputation) kwāmbika ibara
En-En dictionary 
tooth decay   ukubungwa, ukubora kw'amenyo
En-En dictionary