Write untidily (6)
I believe the answer is:
scrawl
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">write untidily</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 scrawl that I've seen before include "Crawls away from bad writing" , "carelessly written" , "Hasty writing" , "Long, maybe illegible, piece of writing" , "Illegible hand" .)