Sunday    icūmwēru, umusi w'Imāna, kuw'Imāna, kuwa Mungu (Sw.), kw'iyīnga
En-En dictionary 
iyīnga (ama-  5  class 5
singular: i-,iri-
plural: ama-
  
week, Sunday
icūmwēru (ivy-  4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
1. Sunday, 2. week (Rw)
kuwa Mungu  n    Sunday
umusi w'Imāna   phr    Sunday
 sunday found in: Kirundi I (Study lessons)
lesson 62   Months, Days of the Week, Telling Time
lesson 70   Review 61 - 69