assistant    (to chief, esp. in law enforcement) umurōngōzi
En-En dictionary 
chief's assistant   (esp. in law enforcement) umurōngōzi
En-En dictionary 
assistant    helper    umutabāzi, umufasha
(of the sick) umurwāza
(group of attendants or helpers to elders) ubukūngu
En-En dictionary 
umurōngōzi (aba-)     1  class 1
singular: umu-
plural: aba-
  
guide, leader, chief's assistant (esp. in law enforcement)