Endeavor
I believe the answer is:
try
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">endeavor</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that endeavor can be written as try)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for try that I've seen before include "irritate" , "Endeavour" , "Sample" , "Judge" , "crack" .)