insult    gusīndira, gutuka
En-En dictionary 
gutuka (-tutse)     v    1. to slander, 2. to swear at, 3. to insult
igihūme (ibi-)     4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
spirit, superhuman thing, a one-armed and one-legged ghost with grass growing out of its ears that lives in the valley (used as a serious insult)
gusīndira (-sīndiye)     v    1. to scold, 2. to insult, 3. to mistreat
gusīndirwa (-sīndiwe)     v    to be insulted, provoked
gutukwa (-tutswe)     v    to be insulted, slandered