Write messily (6)
I believe the answer is:
scrawl
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">write messily</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 scrawl that I've seen before include "Messy drawing, possibly" , "London's river" , "careless writing" , "Scribbled writing" , "Write in slovenly manner" .)