Ignorant, not cognisant (7)
I believe the answer is:
unaware
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">ignorant</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">not cognisant</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for unaware that I've seen before include "Not informed - ignorant (of)" , "Without knowledge" , "Unknowing" , "Ignorant - unconscious" , "Unwitting, not knowing" .)