Falseness (6)
I believe the answer is:
deceit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">falseness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for deceit that I've seen before include "Hypocrisy" , "Pretence, cheating" , "Dishonest trick" , "Duplicity or trickery" , "Dissimulation" .)