Exact satisfaction from Geneva (6)
I believe the answer is:
avenge
'exact satisfaction' is the definition.
(I've seen this in another clue)
'from geneva' is the wordplay.
'from' is an anagram indicator (the anagram comes from the same letters).
'geneva' is an anagram of 'AVENGE'.
(Other definitions for avenge that I've seen before include "To seek vengeance" , "Redress, vindicate" , "Repay injury" , "Inflict harm in return (for wrong)" , "Get back at for (a wrong)" .)