Be unsuccessful (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be unsuccessful</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 fail that I've seen before include "Don't succeed" , "Let down" , "Be unsuccessful, say in exam" , "Flunk" , "Be unable to achieve one's object" .)
(Other definitions for lose that I've seen before include "Cease to have" , "Mislay or be defeated" , "Be beaten" , "go down" , "Fail to win" .)