Sneaky (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sneaky</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for underhand that I've seen before include "way of delivering service." , "Unsporting" , "Crafty" , "Done in sly or secret way" , "done deviously through cover" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sneaky</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 sly that I've seen before include "'Cunning, wily (3)'" , "Devious, cunning" , "Doing things in unpleasant and secret way" , "Cunning; surreptitious" , "Sneaky" .)