Put forth, as effort (5)
I believe the answer is:
exert
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">put forth as effort</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 exert that I've seen before include "Expend" , "Cartoon 4 across" , "Wield - apply" , "Work strenuously" , "Bring into use, apply" .)