the.com/climax

The peak you build toward, then everything is downhill by definition.

means The highest or most intense point of something — a story, an argument, an experience — the moment everything else was leading up to.

from From Greek 'klimax,' meaning ladder or staircase — the same root as 'climb.' Ancient rhetoricians used it for a figure of speech where ideas are arranged in ascending order of force, each one a rung higher than the last. English borrowed it first for that rhetorical ladder-trick, then let it slide into meaning the top rung itself: the peak the climbing was for.

original sense
a rhetorical ladder of escalating phrases, not a single peak
grammar nerds note
anticlimax was coined specifically to mock a failed ladder
sexual sense
only became common usage in the early 20th century
story structure
always the shortest part, yet the one everyone remembers
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