Brief success (5,2,3,3)
I believe the answer is:
flash in the pan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">brief success</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 flash in the pan that I've seen before include "Brilliance that doesn't last" , "Brief success - flambe moment?" , "First and only success" , "Failure, after initial promise" , "Nine days' wonder" .)