kwīhakana (-īhakanye)     v    to deny
 kwihakana : possible conjugation of:
gukana (-kannye)     v    1. to smooth out, stretch out (vt) (as skin for drum), 2. to speak evil of, 3. to threaten
deny    guhakana, kwīma
(emphatically) guhebūza, kwīhakana
En-En dictionary 
 kwihakana found in: Kirundi II (Grammar)
chapter 33   Reflexive used to intensify