Biblical city destroyed for its wickedness (5)
I believe the answer is:
sodom
'biblical city destroyed for its wickedness' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sodom that I've seen before include "Wicked town of ancient Palestine, twinned with Gomorrah" , "Depraved town (Bible)" , "Place near Gomorrah" , "Wicked OT city" , "City fired" .)