cli-mac-tic / klī-măk-tĭk
1. relating to the culmination or climax
I wanted to have a climactic scene that subverted those familiar ideas.
Scott Derrickson, 1966 –
Ultimately derived from a combination of the stem klimak of the Greek feminine noun klimax, klimkos (ladder, staircase) and the Greek adjectival suffix -tikos, -tika, -tikon (belonging to, related to, pertaining to) and indicating that something has reached its highest point.
Thank you to Allen Ward for providing the etymology of climactic.