Ridicule basketball move guarding fadeaway falling short (6)

I believe the answer is:

debunk

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'ridicule' is the definition.
(debunking is a kind of ridiculing)

I cannot understand how the rest of the clue works.

(Other definitions for debunk that I've seen before include "Show to be exaggerated or false, claim or theory" , "Show to be false or unjustified" , "Expose false claim" , "Expose false claims" , "Show to be falsely honoured" .)

I've seen this clue in The Hindu.

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