countersense

noun2

1. •
   An opposite meaning.

   • Panurge's comedy is the agony of indecision as he struggles obstinately and vainly to interpret every unfavorable omen in its countersense, to substitute his willful imagining for reality and fate. — 1968
2. •
   A nonsensical idea; a contradiction in terms; something that contradicts an established principle, architectural or musical style, etc.

   • On that line we reach simply the old countersense: "All is Reality" is as meaningless a proposition as "All is Illusion." — 1905