Figured (out) (6)
I believe the answer is:
sussed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">figured out</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 sussed that I've seen before include "Checked out, looked into" , "Discovered or assessed" , "Realised, grasped" , "Well informed - aware" , "Suspected or figured out" .)