Splodge (6)
I believe the answer is:
blotch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">splodge</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for blotch that I've seen before include "Spot of irregular discoloration" , "Unsightly patch" , "inky mess?" , "Large stain" , "Irregular coloured mark" .)