showdown
/ˈʃoʊ.daʊn/Definitions
1. noun
A confrontation or competition between two or more people or things, especially one in which the outcome is uncertain.
“The final round of the tournament was a real showdown between the two top players.”
2. noun
A sudden or unexpected event, especially one that is dramatic or exciting.
“The firework display was the perfect culmination of the evening, the grand finale was a true showdown of color and light.”
3. verb
To engage in a confrontation or competition, especially one in which the outcome is uncertain.
“The two politicians will showdown in the next election, and it’s anyone’s guess who will win.”