Downturn (5)
I believe the answer is:
slump
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">downturn</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 slump that I've seen before include "Bad economic recession" , "Commercial decline" , "flop" , "Marked decline" , "Fall heavily and limply" .)