English

Definition of showdown noun from the Oxford Advanced Learner's Dictionary

 

showdown

 noun
noun
BrE BrE//ˈʃəʊdaʊn//
 
; NAmE NAmE//ˈʃoʊdaʊn//
 
[usually singular]
 
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an argument, a fight or a test that will settle a disagreement that has lasted for a long time Management are facing a showdown with union members today. Fans gathered outside the stadium for the final showdown (= the game that will decide the winner of the competition).Extra examples He was now strong enough to force a showdown with them. Of course I’ll support you if it comes to a showdown. The council is heading for a showdown over the new proposals. The scene was set for the final showdown. the semi-final showdown with Australia last month the showdown against Holland in April the title showdown between Arsenal and United Fans gathered outside the stadium for the final showdown.
See the Oxford Advanced American Dictionary entry: showdown