Worship of the Devil (8)

I believe the answer is:

satanism

'worship of the devil' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for satanism that I've seen before include "Worship of the devil using mantissa" , "Belief in and reverence for the devil" , "Devil-worship" , "Evil praying" .)

I've seen this clue in the Irish Times (Simplex) and The Irish Times.

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