High-level appointee (4)
I believe the answer is:
czar
'high-level appointee' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for czar that I've seen before include "person of great power" , "Despot" , "Pre-1917 Russian ruler" , "Russian emperor" , "Russian ruler (alt. but not rare spelling)" .)