Ungodly (7)
I believe the answer is:
impious
'ungodly' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for impious that I've seen before include "Ungodly" , "Wicked, profane" , "9 [DEMON]" , "Showing disrespect for a god" , "Irreverent; wicked" .)