Profane (9)
There are a few possibilities for this:
desecrate
'profane' is the definition.
(I know that profane can be written as desecrate)
This is all the clue.
(Other definitions for desecrate that I've seen before include "Profane" , "Treat (something sacred) with great disrespect" , "Spoil" , "Secreted a means to treat something sacred with disrespect" , "Violate the sacred" .)
'profane' is the definition.
(associated in meaning)
This is all the clue.
(Other definitions for impious that I've seen before include "Wicked, profane" , "9 [DEMON]" , "Irreverent; wicked" , "Lacking veneration or respect" , "Lacking reverence for God" .)
'profane' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for godless that I've seen before include "Heathen" , "Profane, wicked" , "Wicked - impious" , "Of no faith" , "Irreverent - atheistic" .)