Enjoyable proverb about fist being used (10)
I believe the answer is:
satisfying
'enjoyable' is the definition.
(thesaurus)
'proverb about fist being used' is the wordplay.
'proverb' becomes 'saying' (I've seen this in another clue).
'about' is an insertion indicator.
'being used' indicates an anagram.
'fist' anagrammed gives 'tisf'.
'saying' enclosing 'tisf' is 'SATISFYING'.
(Other definitions for satisfying that I've seen before include "Cool" , "filling" , "Pleasurable" , "Meeting (a condition)" , "Meeting (requirements)" .)