Goddess in Paphos, undressed, tried to change (9)
I believe the answer is:
aphrodite
'goddess' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
(Other definitions for aphrodite that I've seen before include "Atrophied (anag.)" , "Sex goddess" , "Greek goddess equivalent to Roman Venus" , "Greek goddess of love, like Roman Venus" , "Greek version of Roman Venus" .)