frightened    (to be) guhagarika umutima, gucīka ivutu
En-En dictionary 
guhagarika umutima (-hagaritse)   phr    1. to be troubled, frightened, 2. nervousness, anxiety, worry
gukāngwa (-kānzwe)     v    1. to be frightened, thunderstruck, 2. to be taken sick suddenly (supposedly from python looking at one)
 frightened found in: Kirundi I (Study lessons)
lesson 76   Possessive Adjectives I
lesson 86   Demonstrative Adjectives I