Without knowledge; unaware (8)
I believe the answer is:
ignorant
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">without knowledge</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">unaware</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for ignorant that I've seen before include "Unknowing" , "Empty-headed" , "Lacking in or good manners" , "Unlearned, lacking knowledge" , "No rating for being uninformed" .)