Visiting starved character, initially not seen without restraints (10)
I believe the answer is:
unfettered
'without restraints' is the definition.
'visiting starved character initially not seen' is the wordplay.
'visiting' is an insertion indicator.
'starved' becomes 'unfed'.
'character' becomes 'e'.
'initially not seen' becomes 'tter' (I can't explain this - if you can you should believe this answer much more).
'e'+'tter'='etter'
'unfed' going around 'etter' is 'UNFETTERED'.
(Other definitions for unfettered that I've seen before include "released" , "Not restricted" , "without restraint" .)