so-and-so   ▶ naka, –ntūze
En-En dictionary 
nāka (ba-)     1  class 1
singular: umu-
plural: aba- ▶ so-and-so, what's his name (male)
banaka those ones (unnamed people)
ntūze    ▶ so-and-so, what's-his-name
 so-and-so found in: Kirundi II (Grammar)
chapter 34  ▶ kwama, guhora – “to always...”