State of being alone (8)
I believe the answer is:
solitude
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">state of being alone</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for solitude that I've seen before include "Seclusion" , "Lone condition" , "Isolation, loneliness" , "Avoiding company" , "Privacy" .)