prevent    kubuza, gutururuza
(from speaking) guhwāmika
(one from harming another) kuzina
En-En dictionary 
speak    (speaking evil of another with whom you work) ikēba
(one who speaks with senseless repititions of words) ikirogorogo
(all speaking together) imvugarimwe
(to ~) kuvuga
(against) guhāririza
(carelessly) gufudika
(clearly) gufobōra, gutobekeranya
(distinctly) gutobora
(distinctly, not having been able to before) gutumbūra
(evil of one another) gucurikanya
(evil of) gukana, kunegura
(evil of the king) kurogota
(evil of a ruler) kuyoba
(fearlessly) kwūbahuka
(foolishly) kudebagura
(hatefully) gucobogoza
(hesitantlyusually used in negative) guhengēshanya
(in a mysterious language) gufobeka
(incoherently) kuvōvōta
(in someone's favor) gutēturura
(lightly) kujajura
(loudly) kurangurura, kurandamuka
(many words, usually quite meaningless ones) guhogōmboka
(sarcastically) kurtyekeza
(the truth) guhinyuza
(thoughtlessly) kurandamuka
(unwisely or rudely) kurofokwa
(very beseechingly) kubobōteza
(when one shouldn't) kuyogora
(where others hear voices but do not understand) guhwirima
(without arriving at point) kurerembuza
(to cause to) kuvuza
(to leave off speaking evil and speak kindly) kwigarura
(to prevent from speaking) guhwāmika
(give gift to bride so she will ~) guhorōra
(refuse to speak till given gift, as bride does) guhorōrwa
En-En dictionary 
harm    (because of revenge) kuziza
(in order to avenge) guhōra
(to desire to ~ another without reason) gukānkamwa
(to prevent one from harming another) kuzina
En-En dictionary 
guhwāmika (-hwāmitse)     v    1. to put down, 2. prevent from speaking, 3. to calm, appease
gutega (-teze)     v    1. to hinder, to hamper, to impede, to obstruct, to prevent, 2. to trap, 3. to bet, 4. to be flat, level
gutururuza (-tururuje)     v    1. to push a person down where he belongs, 2. to squelch, 3. to prevent, to stop, 4. to convince, 5. to catch swarming bees
kubuza (-bujije)     v    1. to hinder, prevent, suppress, 2. to forbid, to prohibit
kubuzwa (-bujijwe)     v    to be hindered, prevented
ugukīngīra   9  class 9
singular: uku-
  
prevention
prevention    ugukingira
En-En dictionary