Crossword Genius

Protest new spirit (5)

Ross

I believe the answer is:

demon

'spirit' is the definition.
(I've seen this before)

'protest new' is the wordplay.
'protest' becomes 'demo' (I've seen this before).
'new' becomes 'n'.
'demo'+'n'='DEMON'

(Other definitions for demon that I've seen before include "Fallen angel" , "Skilful person" , "Familiar" , "Inspiring force" , "Evil spirit or cruel person" .)

I've seen this clue in The Mirror.
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