Taunted in order to be pure (9)
I believe the answer is:
untainted
'be pure' is the definition.
(thesaurus)
'taunted in order' is the wordplay.
'order' is an anagram indicator.
'taunted'+'in'='tauntedin'
'tauntedin' is an anagram of 'UNTAINTED'.
'to' acts as a link.
(Other definitions for untainted that I've seen before include "Not polluted" , "Virginal" , "without unwanted substances" .)