irrationality

/ɪˌræʃəˈnæləti/
noun
  1. The quality or state of being not based on reason or clear thinking; illogical or unreasonable behavior or thought.
    • She couldn't understand the irrationality of his fear of harmless spiders.
    • The crowd's irrationality during the panic led to dangerous decisions.
    • The economist warned about the irrationality of investing based on rumors alone.
  2. An act, statement, or belief that is not logical or reasonable.
    • His sudden decision to quit his job was one of many irrationalities that worried his friends.
    • The report listed several irrationalities in the company's spending habits.
    • We laughed at the irrationality of thinking a coin toss could predict the future.
What does "irrationality" mean? | whatsthatwordmean | whatsthatwordmean