ashamed    (to be) kumāramāra, kugira isoni, gutēra isoni
(to make) kumāramāza
En-En dictionary 
kumāramāra (-māramāye)     v    1. to be ashamed, 2. to be confused, to be dismayed
kumāramāza (-māramāje)     v    to make ashamed, humiliate
kutagira isoni   phr    1. to be shameless, unashamed, 2. to be rude, vulgar, obtrusive, coarse
kwerura (-eruye)     v    1. to tell publicly, make known, 2. to be unashamed, shameless, 3. to be bold (esp. of young girl), 4. to be rude, vulgar, obtrusive, coarse
unashamed    (to be) kwerura, kutagira isoni
En-En dictionary 
 ashamed found in: Kirundi I (Study lessons)
lesson 93   Demonstrative Pronouns