Sloppily (10)
I believe the answer is:
carelessly
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sloppily</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 carelessly that I've seen before include "without proper attention" , "Without a thought" , "Without concern" , "Casually" , "sloppily" .)