Goddess making a mister naughty (7)
I believe the answer is:
artemis
'goddess' is the definition.
(thesaurus)
'a mister naughty' is the wordplay.
'naughty' indicates anagramming the letters.
'mister' with letters rearranged gives 'rtemis'.
'a'+'rtemis'='ARTEMIS'
'making' acts as a link.
(Other definitions for artemis that I've seen before include "Cynthia" , "female Olympian" , "Virgin" , "Twin sister of Apollo" , "Greek huntress goddess" .)