Supremo's order to a curate finally cancelled (8)
I believe the answer is:
autocrat
'supremo's' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I don't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for autocrat that I've seen before include "One with absolute power" , "One person who has unlimited power" , "Arrogant type" , "Person with unlimited power, kind of dictator" , "who's in charge? Absolutely!" .)