Diligence (8)
I believe the answer is:
industry
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">diligence</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for industry that I've seen before include "Work (of manufacturing)" , "Commerce" , "Steady application - to manufacturing?" , "Business" , "The manufacture or production of goods" .)