Order return of inexperienced partner for rave (7)
I believe the answer is:
warrant
'order' is the definition.
(warrant can mean an order or licence)
'return of inexperienced partner for rave' is the wordplay.
'return of' says the letters should be written backwards.
'inexperienced' becomes 'raw' (similar in meaning).
'partner for rave' becomes 'rant' (as in the phrase 'to rant and rave').
'raw' back-to-front is 'war'.
'war'+'rant'='WARRANT'
(Other definitions for warrant that I've seen before include "Permit for arrest, search of premises, etc" , "Authorise, justify" , "Guaranty - authorisation to make an arrest" , "Travel pass" , "Justify; authorisation" .)