Nonstarter (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nonstarter</span>' is the definition.<br/ ><span class="explanation-format__explanation">(dud is a kind of nonstarter)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dud that I've seen before include "Just a palindromic flop" , "A thing failing to work" , "Counterfeit article" , "Not functioning" , "Failed, worthless thing" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nonstarter</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 sub that I've seen before include "Navy vessel" , "Replacement" , "Reserve (abbr)" , "Underwater vessel" , "Prefix denoting under" .)