Conscientious (8)
I believe the answer is:
diligent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">conscientious</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for diligent that I've seen before include "Attentive and busy" , "Painstaking - I tingled (anag)" , "Thorough" , "I tingled, being hard-working and meticulous" , "Steady in application and industry" .)