disappear    gukamangana, kuyōnga, kuyōngayōnga, kuzimangana, kurēnga
(suddenly as you watch) kunyika
En-En dictionary 
kunyika (-nyitse)     v    1. to slide (landslide), 2. to pack down (vi), 3. to come to an end, be completely destroyed (while you are watching, to suddenly disappear as you watch)
kuzimangana (-zimanganye)   v    to be obscured, be blurred, disappear
gukamangana (-kamanganye)     v    to disappear
kuyōngayōnga (-yōngayōnze)   v    to melt away, disappear
kurēnga (-rēnze)     v    1. to surpass, go beyond, 2. to break (the law), 3. to disappear, to set (of sun), 4. to be more
urēnge i Gitega! pass by Gitega! go beyond Gitega!
kuyōnga (-yōnze)   v    1. to melt (e.g. sugar, salt), 2. to disappear, 3. to be absorbed