Trenchant (5-3)
I believe the answer is:
clear-cut
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">trenchant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for clear-cut that I've seen before include "Sharply defined" , "Decisive" , "Definite - 2 down" , "Free from obscurity" , "Cruel act (anag)" .)