51Թ

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View synonyms for

rational

[rash-uh-nl, rash-nl]

adjective

  1. agreeable to reason; reasonable; sensible.

    a rational plan for economic development.

  2. having or exercising reason, sound judgment, or good sense.

    a calm and rational negotiator.

    Synonyms: , , ,
    Antonyms:
  3. being in or characterized by full possession of one's reason; sane; lucid.

    The patient appeared perfectly rational.

    Antonyms:
  4. endowed with the faculty of reason.

    rational beings.

  5. of, relating to, or constituting reasoning powers.

    the rational faculty.

  6. proceeding or derived from reason or based on reasoning.

    a rational explanation.

  7. Mathematics.

    1. capable of being expressed exactly by a ratio of two integers.

    2. (of a function) capable of being expressed exactly by a ratio of two polynomials.

  8. Classical Prosody.capable of measurement in terms of the metrical unit or mora.



noun

  1. Mathematics.rational number.

rational

/ ˈæʃəə /

adjective

  1. using reason or logic in thinking out a problem

  2. in accordance with the principles of logic or reason; reasonable

  3. of sound mind; sane

    the patient seemed quite rational

  4. endowed with the capacity to reason; capable of logical thought

    man is a rational being

  5. maths expressible as a ratio of two integers or polynomials

    a rational number; a rational function

“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

noun

  1. maths a rational number

“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

  • rationally adverb
  • rationalness noun
  • antirational adjective
  • hyperrational adjective
  • nonrational adjective
  • overrational adjective
  • prerational adjective
  • quasi-rational adjective
  • transrational adjective
  • ultrarational adjective
  • unrational adjective
  • ˈپDzԲ adverb
  • ˈپDzԲԱ noun
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51Թ History and Origins

Origin of rational1

First recorded in 1350–1400; Middle English racional, from Latin پō, equivalent to پō- (stem of پō ) reason + - -al 1
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51Թ History and Origins

Origin of rational1

C14: from Latin پōnālis , from پō reason
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Synonym Study

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Example Sentences

Examples have not been reviewed.

Defiance is a rational response to tech businesses urging us to prioritize the use of tools meant to replace our work and welcome their most bizarre and dystopian interventions.

From

But is that rational after a friendly defeat?

From

His exhausting trade war with China has accomplished nothing, except to convince Xi’s unappetizing but highly rational regime that negotiating with this dude is pointless.

From

But still: For the president of the United States to accuse the government of South Africa, in 2025, of conducting a racial genocide is so craven, so shameless, that beggars any rational description.

From

That will require adopting a rational approach, not one based on paranoia.

From

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