Smear carelessly (4)
I believe the answer is:
daub
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">smear carelessly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for daub that I've seen before include "Carelessly spread (paint)" , "coat casually" , "Amateurish painting" , "Do graffiti" , "Smear; plaster" .)