highly significant or important especially bringing about or marking the beginning of a new development or era; "epochal decisions made by Roosevelt and Churchill"; "an epoch-making discovery"
marked by excessive confidence; "an arrogant and cocksure materialist"; "so overconfident and impudent as to speak to the queen"; "the less he knows the more positive he gets"
the decisive moment in a novel or play; "the deathbed scene is the climax of the play"
arrangement of clauses in ascending order of forcefulness
the highest point of anything conceived of as growing or developing or unfolding; "the climax of the artist's career"; "in the flood tide of his success"