Was untruthful (4)
I believe the answer is:
lied
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">was untruthful</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lied that I've seen before include "Idle (anag.)" , "Told stories" , "Stated falsely" , "Was untruthful; song" , "Produced pork pie" .)