Slow on the uptake (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slow on the uptake</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 obtuse that I've seen before include "A 3dn between 90 and 180 degrees" , "Lacking in insight" , "To be thus blunt" , "Dense, dim about the angle" , "Orchestra; stripe" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slow on the uptake</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for dense that I've seen before include "Thick, compact or crowded" , "Closely spaced or extremely stupid" , "Needs (anag) -- thick" , "Thick as undergrowth may be" , "Tightly packed - stupid" .)