Teasing (11)
I believe the answer is:
tantalising
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">teasing</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 tantalising that I've seen before include "making one's mouth water?" , "Teasing" .)