Imitator (7)

I think it could be either:

Which length description are you looking for?:

copycat

'imitator' is the definition.
(synonyms)

This is all the clue.

(Other definitions for copycat that I've seen before include "Person imitating others" , "Done in imitation" , "One imitating another" , "Plagiarist possibly" , "Person (or crime) imitating another" .)

I've seen this clue in the Sydney Morning Herald, The Telegraph and the Evening Standard.

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