Stupor in Goa, perhaps (6)
I believe the answer is:
trance
'stupor' is the definition.
(thesaurus)
'goa perhaps' is the wordplay.
'goa' becomes 'tr' (I can't explain this - if you can you should give a lot more credence to this answer).
'perhaps' becomes 'ance' (I've seen this in other clues).
'tr'+'ance'='TRANCE'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for trance that I've seen before include "Ecstasy" , "state of shock" , "Sleep-like state experienced in canter" , "Deep sleeplike state" , "Catalepsy" .)