Word repeated before "Pants on fire!" (4)
I believe the answer is:
liar
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">word repeated before pants on fire</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for liar that I've seen before include "Fibber" , "Fabricator" , "Untruthful person (Billy in Schlesinger film)" , "One not telling the truth" , "One telling untruths" .)