badly    nābi
En-En dictionary 
feel    kwūmva
(around for) gukabakaba
(to begin to ~ better after being ill) gutenzukirwa
(to cause to ~ badly) gusurira
(faint) kuyāmīra
(joy, positive emotions) kuryōherwa
(to make another ~ badly over what he's done) gutēteka
(to not ~ anything) gutimba
(of) gukorakora
(pain) kubabara
(sad) gutunturirwa
(the way) guhwihwisha, kujuragirika, gukāmbakāmba
(the way before one with foot or spear) gukebagiza
En-En dictionary 
kubura Shinge na Rugero (-buze)   phr    to lose control, to fail badly (Shinge and Rugero are two strategic hills that Rwanda lost to Burundi in a famous historic battle between the two kingdoms)
gusurira (-suriye)     v    1. to pass gas, to fart, 2. to sting or bite (insect), 3. to cause to feel badly
gutēteka (-tētetse)     v    to make another feel badly over something he's done, to be easily deceived or mocked
sleeping    (effects of ~ badly) ibirare
En-En dictionary 
remorse    (to make another feel badly over something he's done) gutēteka
En-En dictionary 
guhera (-heze)     v    1. to finish (vi), come to an end, 2. to grind badly, coarsely, 3. to perish, to be dying
gusibanganya (-sibanganije)     v    1. to blot out, dig up, plough badly, 2. to fail to do one's task, 3. to neglect one's work
ibirare    4    1. effect of sleeping badly, 2. 'morning after' headache
nābi     adv    badly, poorly
plough    (badly) gusibanganya
En-En dictionary 
 badly found in: Kirundi I (Study lessons)
lesson 44   Some verbs