lucky    (to be) gucuna, guhīrwa, kuroranirwa
En-En dictionary 
gucuna (-cunye)   v    1. to be fortunate, lucky, free from trouble when others are having it, 2. to be carefree,
guhīrwa (-hīriwe)     v    1. to be fortunate, to be lucky, 2. to be blessed, 3. to be happy
guhumirwa (-humiwe)     v    1. to be unfortunate, to be unlucky, luckless, hapless, 2. be in difficulty, 3. 'haven't got a chance'
kuroranirwa (-roraniwe)     v    1. to be fortunate, be lucky, 2. to have a lot (may be even a lot of debts or trouble)