Crossword Genius

Spook ran event frightfully (8)

Ross

I believe the answer is:

revenant

'spook' is the definition.
(thesaurus)

'ran event frightfully' is the wordplay.
'frightfully' indicates an anagram.
'ran'+'event'='ranevent'
'ranevent' is an anagram of 'REVENANT'.

I've seen this clue in The Independent.
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