Tyrannical ruler (8)
'tyrannical ruler' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for dictator that I've seen before include "Eg, Stalin" , "Such as Saddam Hussein" , "Kind of ruler like Hitler or Franco" , "One who reads out for others to scribe" , "One with absolute authority" .)
'tyrannical ruler' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for despot that I've seen before include "Tyranical dictator" , "Cruel and oppressive ruler" , "nasty ruler?" , "Person with more than enough power" , "who treats others badly?" .)