Fail miserably (4)
I believe the answer is:
bomb
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fail miserably</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 bomb that I've seen before include "fortune" , "Unpleasant surprise" , "Flop - load of money" , "Great deal of money (slang)" , "Big bucks - flop" .)