51Թ

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View synonyms for

irrational

[ih-rash-uh-nl, -rash-nl]

adjective

  1. without the faculty of reason; deprived of reason.

  2. without or deprived of normal mental clarity or sound judgment.

  3. not in accordance with reason; utterly illogical.

    irrational arguments.

    Synonyms: , ,
  4. not endowed with the faculty of reason.

    irrational animals.

  5. Mathematics.

    1. (of a number) not capable of being expressed exactly as a ratio of two integers.

    2. (of a function) not capable of being expressed exactly as a ratio of two polynomials.

  6. Algebra.(of an equation) having an unknown under a radical sign or, alternately, with a fractional exponent.

  7. Greek and Latin Prosody.

    1. of or relating to a substitution in the normal metrical pattern, especially a long syllable for a short one.

    2. noting a foot or meter containing such a substitution.



noun

  1. Mathematics.irrational number.

irrational

/ ɪˈæʃəə /

adjective

  1. inconsistent with reason or logic; illogical; absurd

  2. incapable of reasoning

  3. maths

    1. not rational

    2. ( as noun )

      an irrational

  4. prosody

    1. of or relating to a metrical irregularity, usually the occurrence of a long syllable instead of a short one

    2. denoting a metrical foot where such an irregularity occurs

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Other 51Թ Forms

  • irrationally adverb
  • irrationalness noun
  • nonirrational adjective
  • nonirrationalness noun
  • ˈپDzԲԱ noun
  • ˈپDzԲ adverb
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51Թ History and Origins

Origin of irrational1

First recorded in 1425–75; late Middle English, from Latin پō; ir- 2 ( def. ), rational ( def. )
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Example Sentences

Examples have not been reviewed.

They also claimed the decision to end the £300 benefit for thousands of pensioners across the country last year was "irrational" and breached their human rights.

From

“Once again, we see President Trump’s irrational impulses as he tries to institute a discriminatory travel ban,” said Democratic Sen. Alex Padilla of California.

From

The South African Property Owners Association said it was "irrational" to give "nil compensation" to an owner who held land for speculative purposes.

From

This was temporarily blocked when Justice Secretary Shabana Mahmood asked for his release to be reconsidered, saying the decision was "legally irrational".

From

But the idea lodged in my brain like a stone in my shoe: persistent, irrational, impossible to ignore.

From

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irradicableirrationalism