opportunity    umwānya, uburyo
(to lack ~ to say what you intended) kujanirana, kujaniranwa
En-En dictionary 
kujanirana (-janiranye)     v    1. to accept a decision in spite of oneself, 2. to lack opportunity to say what you intended
kujaniranwa (-janiraniwe)   v    1. to accept a decision in spite of oneself, 2. to lack opportunity to say what you intended
kuryāmira (-ryāmiye)     v    to lie in wait for, await opportunity to harm, to lie on
uburyo     8  class 8
singular: ubu-
  
(no pl.) right hand or side, opportunity, occasion, manner
ukuryo   9  class 9
singular: uku-
  
right hand or side, opportunity, occasion, manner
await    (a fixed time) kugerereza
(opportunity to harm) kuryāmira
En-En dictionary 
lack    (of foresight) igihababu
(to ~) kubura, kugōmba, guhaza, guteba, gukērērwa
(opportunity to say what you intended) kujanirana, kujaniranwa
(respect) kwūbahuka
En-En dictionary 
wait    guhagarara, kwīhāngāna, kurēngagiza, kurorēra
(for) kwītega, kurindīra, kurorēra, gusamāza
(for another a long time) kugungarara
(for someone expected) gutegereza
(opportunity to harm) kuryāmira
(the right moment) guhēngēra
(wait!) hīnge!
(waiting outside because you have no permission to enter with others) umugumo
En-En dictionary 
 opportunity found in: Kirundi I (Study lessons)
lesson 28   Class 8 ubu–, ama– (continued)
lesson 70   Review 61 - 69
lesson 107   Associative Verbs
 opportunity found in: Kirundi II (Grammar)
chapter 39   –tuma used to show Reason or Cause
chapter 79   Various Expressions