Crossword Genius

Caught in endless crooked dealing (6)

Ross

I believe the answer is:

nailed

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

I cannot understand how the rest of the clue works.

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(Other definitions for nailed that I've seen before include "Denial (anag.)" , "Secured" , "Fixed with metal spikes" , "Tacked" , "Exposed" .)

I've seen this clue in the Evening Standard.
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