A clever sting (5)

I believe the answer is:

smart

I believe this clue is a double definition.

'a clever' is the first definition.
(I've seen this before)

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

(Other definitions for smart that I've seen before include "Clean and stylish" , "Spruce; sting" , "Stylish; sting" , "Clever - feel mild pain" , "Trams (anag.)" .)

I've seen this clue in the Evening Standard.

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