Criticise deity (3)
I believe the answer is:
pan
I believe this clue is a double definition.
'criticise' is the first definition.
(informal term meaning to criticise heavily)
'deity' is the second definition.
(I know that Pan is Greek deity)
(Other definitions for pan that I've seen before include "Cooking utensil and Greek god" , "all in many words, initially" , "piece in the kitchen" , "Greek god of flocks and merry merry pipes" , "cake" .)