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Irrational

ɪˈraʃən(ə)l

Irrational definitions
adjective
irrational
  1. not logical or reasonable

    "irrational feelings of hostility"

    • not endowed with the power of reason
  2. (of a number, quantity, or expression) not expressible as a ratio of two integers, and having an infinite and non-recurring expansion when expressed as a decimal. Examples of irrational numbers are the number π and the square root of 2
noun
irrational irrationals
  1. an irrational number or quantity; a surd