Crossword Genius

Sharp as a tack

Ross

I believe the answer is:

astute

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sharp as a tack</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for astute that I've seen before include "Subtle" , "Wide" , "Clever and canny" , "on the ball" , "Able to make accurate assessments" .)

I've seen this clue in The Mirror.
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