no one   nta n'umwe, ntanumwe
En-En dictionary 
nta n'umwe   phr    nobody, no one
ntanumwe   phr    nobody, no one
 no one found in: Kirundi I (Study lessons)
lesson 104   Uses of Nta
lesson 105   Further Notes on Nta
 no one found in: Kirundi II (Grammar)
chapter 20   –gira for Negative Imperative, and meaning “to be”