Astute (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">astute</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for clever that I've seen before include "Smart, adroit" , "Quick to learn and understand" , "Deft, able, bright" , "Bright - ingenious" , "Quick at learning and understanding" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">astute</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that astute can be written as shrewd)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for shrewd that I've seen before include "sharp" , "worldly wise" , "Astute or crafty" , "... knowing" , "Canny and clever" .)