Lies (4)
I believe the answer is:
fibs
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lies</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fibs that I've seen before include "Little white lies" , "Trivial lies as by child" , "Harmless little lies" .)