Used bad language (5)
I believe the answer is:
swore
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">used bad language</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>
(Other definitions for swore that I've seen before include "used bad language" , "Uttered profanities or avowed" , "Blasphemed" , "Took oath or cursed" .)