Plausible woman in a twisted belt (7)
I believe the answer is:
tenable
'plausible' is the definition.
(thesaurus)
'woman in a twisted belt' is the wordplay.
'woman' becomes 'ena' (feminine given name).
'in' indicates putting letters inside.
'a twisted' is an anagram indicator.
'belt' with letters rearranged gives 'tble'.
'ena' placed within 'tble' is 'TENABLE'.
(Other definitions for tenable that I've seen before include "Can be maintained" , "Well-founded" , "Viable" , "Possible to be defended" , "Able to be believed" .)