Uninspired medieval performer turned up (4)

I believe the answer is:

drab

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'uninspired' is the definition.
(I've seen this in another clue)

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

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(Other definitions for drab that I've seen before include "kind of tart" , "Dowdy" , "Dull light brown colour" , "Cheerless, shabby" , "Grey or light brown cloth" .)

I've seen this clue in The Telegraph.

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