climactic
adj. B2 Upper Intermediate US //kɫaɪˈmæktɪk// UK //klaɪmˈæktɪk// cli·mac·tic
adj. happening at the most exciting or important moment of a story or event. It is the part where everything reaches its peak.
adj. occurring at the highest point of intensity or importance in a sequence of events. Often used to describe the final, decisive moment of a narrative or performance.
The final match was the climactic moment of the season.
The film builds up to a climactic scene where the hero finally defeats the villain.
The summit meeting was the climactic event of the decade, bringing together world leaders to sign a treaty that would end decades of regional conflict.
From climax + -ic.