Covered in perspiration (6)
I believe the answer is:
sweaty
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">covered in perspiration</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 sweaty that I've seen before include "Given to perspiring, in moist state" , "affected by the heat" , "Covered in perspiration" , "Hot and perspiring" , "Damp with perspiration" .)