Climactic

Cli`mac´tic

Of or pertaining to a climax; forming, or of the nature of, a climax, or ascending series.

A fourth kind of parallelism . . . is still sufficiently marked to be noticed by the side of those described by Lowth, viz., climactic parallelism (sometimes called "ascending rhythm").

- S. R. Driver.

Adj.

climactic - consisting of or causing a climax; "a climactic development"

Antonyms:

anticlimactic - coming after the climax especially of a dramatic or narrative plot; "everything after the discovery of the murderer was anticlimactic"

acmatic, apical, capital, chief, consummate, head, headmost, highest, maximal, maximum, meridian, meridional, overmost, paramount, preeminent, summital, supreme, tip-top, top, topmost, ultimate, upmost, uppermost, vertical, zenithal