Not readily bent on getting sozzled (5)
I believe the answer is:
stiff
'sozzled' is the definition.
(I know that sozzled can be written as stiff)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for stiff that I've seen before include "cheat" , "Formal" , "tough" , "Firm" , "Starched, rigid" .)