oxymoron

noun2

1. •
   (rhetoric) A figure of speech in which two words or phrases with opposing meanings are used together intentionally for effect.

   • In Oxymoron jarring phrases join And terms opposed in harmony combine. — 1835
2. •
   A contradiction in terms.

   • “Stable inflation is an oxymoron because it means it’s not stable,” Shelton told CNN in a recent interview. — 2024