Not easily satisfied (8)
I believe the answer is:
exacting
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not easily satisfied</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 exacting that I've seen before include "Not easily satisfied" , "Unreasonable in making demands" , "Insisting upon" , "Stringent" , "Difficult and onerous" .)