Of sound nature, possibly super! (5)

I believe the answer is:

sonic

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

I can't explain the rest of the clue.

(Other definitions for sonic that I've seen before include "Involving sound waves, say a boom" , "Sort of boom" , "seven hundred and forty three mph!" , "Using waves" , "Relating to sound waves" .)

I've seen this clue in the Evening Standard.

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