dirty    –bi
(to be) guhumāna, gucafura
(to be very) gushisha
(to become, get) kwāndura
(~ oil) amavuta mabi ava mu mashini
En-En dictionary 
kwāndura (-ānduye)     v    1. to contract a disease from another, 2. to get dirty
gucafura (-cafuye)   v    to be dirty
-bi   adj    1. bad, 2. dirty, 3. ugly
guhumāna (-humānye)     v    to be dirty, unclean, defiled
gushisha (-shishe)     v    1. to be big, fat, chubby 2. to be flourishing (of growing things, child), 3. to be very dirty, unpleasant, repulsive, 4. to tie beans to hedge to dry
get    kuronka, guhabwa
(angry, suddenly when one has been talking nicely) kugangabuka
(big, skin in water) kubōmbōka
(close together) kwegerana
(dark, late) kwīra
(dirty) kwāndura
(food for oneself) gutāra
(~ out of the car) kuva mu modoka, gusohoka mu modoka
(~ out of my way!) have! vaho!
(~ out of there) have, vaho
(left behind as you stare at something) kurēngāra
(something in eye) gutosekara
(thin) kugeruka
(thin, very) kugōgōra
(up) guhaguruka, kuvyūka
(up, quickly) kubaduka
(up, to help another ~) kuvyūra
En-En dictionary 
oil    amavuta
(olive) amavuta ya elayo
(dirty ~) amavuta mabi ava mu mashini
En-En dictionary 
 dirty found in: Kirundi I (Study lessons)
lesson 16   –ra Present Tense of Verb
lesson 33   Class 10 aha-
lesson 51   Ordinary Past Tense I
lesson 75   Immediate Past (or, –ra– Past)
lesson 97   Adjective –he?