Pick extremely raunchy clothing providing thrill (9)
I believe the answer is:
electrify
'thrill' is the definition.
(thesaurus)
'pick extremely raunchy clothing providing' is the wordplay.
'pick' becomes 'elect'.
'extremely' suggests removing the centre.
'clothing' indicates putting letters inside.
'providing' becomes 'if' (I've seen this in other clues).
'raunchy' with its middle removed is 'ry'.
'ry' placed around 'if' is 'rify'.
'elect'+'rify'='ELECTRIFY'
(Other definitions for electrify that I've seen before include "Excite intensely" , "Cause thrilling excitement in (someone)" , "Galvanise - animate" , "Fire" , "Charge - excite greatly" .)