Crossword Genius

Creepy, a bit like CIA agent? (6)

Ross

I believe the answer is:

spooky

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'creepy' is the definition.
(thesaurus)

I don't understand how the remainder of the clue works.

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(Other definitions for spooky that I've seen before include "Rather frightening" , "Eerie" , "Chilling" , "weird" , "Sinister, ghostly" .)

I've seen this clue in The Times.
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