Spoken defamation (7)
I believe the answer is:
slander
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spoken defamation</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for slander that I've seen before include "Sling mud at" , "False malicious spoken statement" , "muckraking!" , "False or malicious report" , "Malicious speech" .)