Depravity of curt highwayman given semi-freedom (9)
I believe the answer is:
turpitude
'depravity' is the definition.
(synonyms)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for turpitude that I've seen before include "Depraved or wicked behaviour" , "corruption" , "Depravity, wickedness" , "Baseness, depravity" .)