Remove marks from tyrant (6)
I believe the answer is:
despot
'tyrant' is the definition.
(synonyms)
'remove marks' is the wordplay.
'remove' becomes 'de' (I've seen this in other clues).
'marks' becomes 'spot' (I am not sure about this - if you are sure you should believe this answer much more).
'de'+'spot'='DESPOT'
'from' is the link.
Can you help me to learn more?
(Other definitions for despot that I've seen before include "monster?" , "Autocrat" , "Gaddafi, say" , "Caesar for one" , "Cruel absolute ruler" .)