Not true! (5)

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not true</span>' is the definition.<br/ ><span class="explanation-format__explanation">('false' is the opposite to 'true')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for false that I've seen before include "Incorrect" , "Spurious, untrue" , "Bogus" , "Untrue - treacherous - counterfeit" , "Wrong" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not true?</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>
(Another definition for at an angle that I've seen is " Obliquely".)
(Other definitions for lies that I've seen before include "Fibs" , "Reclines" , "Terminological inexactitudes" , "Assumes a horizontal position" , "Falsehood" .)