State purpose ultimately denied (3)
I believe the answer is:
goa
'state' is the definition.
(Indian state)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for goa that I've seen before include "stately annexation of India" , "Region of India" , "Indian state, former Portuguese colony" , "Indian state, formerly Portuguese" , "West coast Indian state" .)