Crossword Genius

Wily (6)

Ross

There are a few possibilities for this:

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

This is all the clue.

(Other definitions for astute that I've seen before include "Clever and perceptive" , "Shrewd, wily" , "Shrewd and sagacious" , "Perspicacious" , "Wise" .)

I've seen this clue in the USA Today and the Sydney Morning Herald.
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