Striking, effective (8)
I believe the answer is:
dramatic
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">striking</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that striking can be written as dramatic)</span><br/ ><br/ >'<span class="explanation-format__original">effective</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for dramatic that I've seen before include "Like play" , "relating to plays, etc" , "Sensational, theatrical" , "might be staggering" , "Like theatre" .)