Not all wild allegations are lawful! (5)

I believe the answer is:

legal

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'are lawful' is the definition.
(associated in meaning)

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

(Other definitions for legal that I've seen before include "It's acceptable" , "sanctioned" , "Lawful" , "associated with silk business?" , "Conforming with the law" .)

I've seen this clue in the Evening Standard.

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