faltering person   urudēndevu
En-En dictionary 
weak    (person) umugoyigoyi
(~ and faltering person) urudēndevu
(place, as scar, on skins or gourds) umuguma
(something that appears to be strong but is ~) igihōmbe
(to be ~) kudendebukirwa, kugabanuka, kugira intege, kugoyagoya, kumugara
(to be ~ and floppy) kuregarega
En-En dictionary 
urudēndevu (in-)     6  class 6
singular: uru-
plural: in-
  
weak, faltering person, anything very soft (lacking stiffness)