Purge of Sophoclean sensibilities (7)
I believe the answer is:
cleanse
'purge' is the definition.
(I've seen this before)
'of sophoclean sensibilities' is the wordplay.
'of' indicates a hidden word.
'CLEANSE' is hidden in the letters of 'sophoclean sensibilities'.
(Other definitions for cleanse that I've seen before include "Scrub" , "Bathe" , "do some laundering?" , "give absolution" , "purify from sin" .)