iyīnga (ama-  5  class 5
singular: i-,iri-
plural: ama-
  
week, Sunday
 iyinga : Prefixless Present 2.class plural of:
kuyīnga (-yīnze)   v    to hum
Sunday    icūmwēru, umusi w'Imāna, kuw'Imāna, kuwa Mungu (Sw.), kw'iyīnga
En-En dictionary 
week    uruhusha, icūmwēru, iyīnga, indwi
(last week) indwi iheze
(next week) indwi iza
En-En dictionary 
 iyinga found in: Kirundi I (Study lessons)
lesson 72   Negative of Far Past
lesson 85   Passives of Monosyllabic Verbs
 iyinga found in: Kirundi II (Grammar)
chapter 2   Compound Future Tenses, Compound Conditional