Definitions for irrational
ɪˈræʃ ə nlir·ra·tional

Princeton's WordNetRate this definition:4.5 / 8 votes

1. irrational number, irrationaladjective

   a real number that cannot be expressed as a rational number

2. irrationaladjective

   not consistent with or using reason

   "irrational fears"; "irrational animals"

3. irrationaladjective

   real but not expressible as the quotient of two integers

   "irrational numbers"

GCIDERate this definition:5.0 / 1 vote

1. irrationaladjective

   Not according to reason; having no rational basis; clearly contrary to reason; easily disproved by reasoning; absurd; -- of assertions and beliefs. Hence, of actions: foolish; unreasonable.

WiktionaryRate this definition:0.0 / 0 votes

1. irrationalnoun

   A real number that can not be expressed as the quotient of two integers, an irrational number.

2. irrationaladjective

   Not rational; unfounded or nonsensical.

   an irrational decision

3. irrationaladjective

   Of a real number, that cannot be written as the ratio of two integers.

   The number uE0009599uE001 is irrational.

4. Etymology: From irrationalis, from ir- + rationalis.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. IRRATIONALadjective

   Etymology: irrationalis, Latin.

   1. Void of reason; void of understanding; without the discoursive faculty.

   Thus began
   Outrage from lifeless things; but discord first,
   Daughter of sin, among th' irrational
   Death introduc'd. John Milton, Paradise Lost.

   He hath eat'n, and lives,
   And knows, and speaks, and reasons and discerns;
   Irrational 'till then. John Milton, Paradise Lost, b. ix.

   2. Absurd; contrary to reason.

   Since the brain is only a part transmittent, and that humours oft are precipitated to the lungs before they arrive to the brain, no kind of benefit can be effected from so irrational an application. Gideon Harvey, on Consumptions.

   I shall quietly submit, not wishing so irrational a thing as that every body should be deceived. Alexander Pope.

WikipediaRate this definition:0.0 / 0 votes

1. irrational

   Irrationality is cognition, thinking, talking, or acting without inclusion of rationality. It is more specifically described as an action or opinion given through inadequate use of reason, or through emotional distress or cognitive deficiency. The term is used, usually pejoratively, to describe thinking and actions that are, or appear to be, less useful, or more illogical than other more rational alternatives.Irrational behaviors of individuals include taking offense or becoming angry about a situation that has not yet occurred, expressing emotions exaggeratedly (such as crying hysterically), maintaining unrealistic expectations, engaging in irresponsible conduct such as problem intoxication, disorganization, and falling victim to confidence tricks. People with a mental illness like schizophrenia may exhibit irrational paranoia. These more contemporary normative conceptions of what constitutes a manifestation of irrationality are difficult to demonstrate empirically because it is not clear by whose standards we are to judge the behavior rational or irrational.

ChatGPTRate this definition:0.0 / 0 votes

1. irrational

   In mathematics, irrational refers to a type of number that cannot be expressed as a simple fraction or ratio of two integers. It is a number that cannot be written as a/b, where a and b are integers and b ≠ 0. The decimal representation of an irrational number is non-terminating and non-repeating. Common examples of irrational numbers include the square root of 2, Pi, and the golden ratio. In a more broader or general sense outside mathematics, irrational can refer to something that is not logical or not based on reason; describing behavior or actions that lack sound judgement, clear thinking or reasoning.

Webster DictionaryRate this definition:3.0 / 1 vote

1. Irrationaladjective

   not rational; void of reason or understanding; as, brutes are irrational animals

2. Irrationaladjective

   not according to reason; absurd; foolish

3. Irrationaladjective

   not capable of being exactly expressed by an integral number, or by a vulgar fraction; surd; -- said especially of roots. See Surd

4. Etymology: [L. irrationalis: cf. F. irrationnel. See In- not, and Rational.]

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Irrational

   ir-rash′un-al, adj. void of reason or understanding: absurd.—n. Irrational′ity.—adv. Irra′tionally.—Irrational numbers, a term applied to those roots of numbers which cannot be accurately expressed by a finite number of figures—e.g. √2 is an irrational number.

Matched Categories

1. • Math

How to pronounce irrational?

1. Alex

   US English

   David

   US English

   Mark

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   Daniel

   British

   Libby

   British

   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

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   Veena

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   Priya

   Indian

   Neerja

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   Zira

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   Oliver

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   Wendy

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   Fred

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   Tessa

   South African

How to say irrational in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of irrational in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of irrational in Pythagorean Numerology is: 9

Examples of irrational in a Sentence

1. Bruce Klingner:

   He was painted as someone who the US could not count on to not start a war, we are seeing some of that now as people realize that Kim, contrary to perception, is not crazy or irrational.

2. Zhang Qi:

   The measure is mainly intended to curb irrational speculation, which could be good for the overall market in the long run, yet could bode ill for speculative stocks in the short term.

3. Cyril Connolly:

   As repressed sadists are supposed to become policemen or butchers so those with irrational fear of life become publishers.

4. Barbara Parker:

   It was a huge honor, what that patch is to me now is such a different kind of symbol. Now, I look at it and think,' It's a symbol of irrational behavior.'.

5. Guillermo Delgado:

   It is a victory for Cuba because it was achieved without conceding basic principles, for Obama, I think it's a spectacular step. ... All countries should change this irrational policy.

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=irrational
2. ^ GCIDE
   https://gcide.gnu.org.ua/?q=irrational
3. ^ Wiktionary
   https://en.wiktionary.org/wiki/Irrational
4. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=irrational
5. ^ Wikipedia
   https://en.wikipedia.org/wiki/Irrational
6. ^ ChatGPT
   https://chat.openai.com
7. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/irrational
8. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=irrational