Dimwit (4)
(Other definitions for boob that I've seen before include "Blunder (colloq.)" , "Mistake; breast (sl.)" , "Embarrassing mistake" , "Error" , "Slip" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dimwit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dolt that I've seen before include "Dunce" , "Dull or stupid fellow" , "Fool" , "Dullard" , "Slow-witted person" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dimwit</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>
(Another definition for simp that I've seen is " who is easily imposed upon?".)