Pure polyester lingerie clothes (8)
I believe the answer is:
sterling
'pure' is the definition.
(thesaurus)
'polyester lingerie clothes' is the wordplay.
'clothes' indicates the answer is hidden within the clue (the letters clothe the hidden word).
'STERLING' can be found hidden inside 'polyester lingerie'.
(Other definitions for sterling that I've seen before include "Excellent - British money" , "British coinage" , "banking standard" , "Of the highest qualiy" , "UK money" .)