antithesis

noun3

1. •
   A proposition that is the diametric opposite of some other proposition.

   • On the night of the 2nd of March 2025, your actions were the antithesis of everything Paddington stands for. — 2025
2. •
   The second stage of a dialectical process in which the thesis is negated.
3. •
   (rhetoric) A device by which two contrasting ideas are juxtaposed in parallel form; a figure of speech arranged in this manner

   • Antithesis, opposing things to things, Oft from the contrast strength and beauty brings. — 1835