Done secretly (11)

I believe the answer is:

clandestine

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

This is the entire clue.

(Other definitions for clandestine that I've seen before include "Secret" , "Undercover" , "Done secretly" , "Done secretively" , "Surreptitious" .)

I've seen this clue in The Times.

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