No, it can't stop you getting nailed (6)

I believe the answer is:

denial

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'no' is the definition.
(I've seen this before)

'it can't stop you getting nailed' is the wordplay.
'nailed' anagrams to 'DENIAL'.
However, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for denial that I've seen before include "Nailed (anag.)" , "Refusal, abnegation" , "Refusal to admit painful truths" , "Repudiation" , "Renunciation" .)

I've seen this clue in the Evening Standard.

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