Decisive confrontation (8)
I believe the answer is:
showdown
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">decisive confrontation</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 showdown that I've seen before include "Final confrontation as in western film" , "Decisive confrontation" , "Final test, often found in westerns" , "Dramatic conclusion" , "Climactic finale" .)