Stewardesses, sophisticated, about turned mad (9)
I believe the answer is:
possessed
'mad' is the definition.
(thesaurus)
'stewardesses sophisticated about turned' is the wordplay.
'about' says the answer is hidden in the clue.
'turned' shows that the letters should be reversed in order.
'dessessop' can be found hidden inside 'stewardesses sophisticated'.
'dessessop' written backwards gives 'POSSESSED'.
(Other definitions for possessed that I've seen before include "Owned or controlled - by the devil?" , "Had ownership of" , "in need of bell, book and candle" , "controlled by inner demons?" , "Enjoyed" .)