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The following statistics are based on the British National Corpus, so they are representative for the British English.

Distribution of usage frequency for the most common synonyms of the noun rationality:


Rationality is a member of the word family rational, included in the Academic Word List by Dr. Averil Coxhead, which contains the 570 most frequent word families used in academic texts from a variety of subject areas, of interest for students that learn the words most needed to study at tertiary institutions.

Definition of the noun rationality

What does rationality mean as a name of something?

noun - plural: rationalities

  1. the state of having good sense and sound judgment
    • example: his rationality may have been impaired
    • lexical domain: States - nouns denoting stable states of affairs
    • synonyms of rationality: reason / reasonableness
    • more generic words: saneness / sanity = normal or sound powers of mind
  2. the quality of being consistent with or based on logic

Alternative definition of the noun rationality


  1. the quality or state of being rational; agreement with reason; possession of reason; due exercise of reason; reasonableness.
  2. objectivity, considerateness.


  1. "Rationality" is a book by Bryan R. Wilson.
    • subjects: Cultural anthropology, Anthropology, Geography, Ethnology, Rationalism
  2. "Rationality" is a book by Nicholas Rescher.
    • also known as "Rationality: a philosophical inquiry into the nature and the rationale of reason"


Rationality is the quality or state of being reasonable, based on facts or reason. Rationality implies the conformity of one's beliefs with one's reasons to believe, or of one's actions with one's reasons for action. "Rationality" has different specialized meanings in economics, sociology, psychology, evolutionary biology and political science.

Printed encyclopedias and other books with definitions for Rationality

Click on a title to look inside that book (if available):

Google previewEconomics Today (2016)

Economics, Economics by CTI Reviews

Bounded rationality: Bounded rationality is the idea that in decisionmaking, rationality of individuals is limited by the...

Google previewWebs of Reality (2002)

Social Perspectives on Science and Religion by William Austin Stahl

As Stephen Kalberg suggests, Weber appears to have used the notion of rationality in four relatively distinct manners.38 First, the notion of practical rationality refers to the attitude of accepting things as they are and figuring out how best to ...

Google previewThe Glorious Koran (1976)

A Bi-lingual Edition with English Translation, Introduction, and Notes by John Kekes

Rationality is a method for solving problems. It is not, as many take it to be, a framework. If it were a framework, then it might exist side by side with such other frameworks as mysticism, art, commerce, and so on. And then it could be thought of ...

Google previewCompetition and Cooperation (1999)

Conversations with Nobelists about Economics and Political Science by James Alt, Margaret Levi, Elinor Ostrom

Normative decision and game theory has the aim of exploring full rationality and its consequences. Full rationality is an ideal about ...

Google previewThe Reincarnating Mind, or the Ontopoietic Outburst in Creative Virtualities (2012)

Harmonisations and Attunement in Cognition, the Fine Arts, Literature Phenomenology of Life and the Human Creative Condition by Anna-Teresa Tymieniecka

While Schrag does not say as much directly, one gets the sense that transversal rationality is the possibility for...

Google previewTheoretical Criminology from Modernity to Post-Modernism (2014)

by Wayne Morrison

Rationality means followingarule, or an abstract moral principle,rather than actingonimpulse, randomness or emotionality. Rationality means building upa logically consistent pattern linkingour thoughtsand actions, and following this pattern ...

Google previewContext Matters (2009)

Institutions and Entrepreneurship by Peter J. Boettke, Christopher J. Coyne

Ecological rationality refers to the emergent system of norms, traditions, and morality while constructivist rationality refers to the view that institutions should be designed through a process of deductive reasoning. It is Smith's contention that ...

Google previewEncyclopedia of the Mind (2013)

by Harold Pashler

Rationality has been exhaustively studied in belief and action. Emotions are causally and conceptually linked to both, but they are not reducible to either belief or action tendencies.

Google previewRoutledge Encyclopedia of Philosophy: Index (1998)

by Edward Craig

Rational beliefs intellectuals Scepticism Rational choice theory Responsibility Scepticism, Renaissance Rationalism Resurrection Scheler, Max Ferdinand Rationality and cultural relativism Revelation Schelung, Friedrich Wilhelm Rationality ...

Google previewEncyclopedia of Political Theory (2010)

by Mark Bevir

Rationality means the capacity to exercise reason, to think, infer, and reach conclusions logically. The word rationality derives from the Latin noun ratio, meaning not only calculation but also method, reason, and order. Some of the most basic ...

Google previewEncyclopedia of Business Analytics and Optimization (2014)

by Wang, John

Category: Management Science 265 Shih-Kung Lai Haoying Han Zhejiang University, China INTRODUCTION Rationality plays a fundamental role in planning theory. The accepted rationality of neo-classic economics and decision theory is ...

Google previewEncyclopedia of Political Economy: L-Z (1999)

by Phillip Anthony O'Hara

Rationality and knowledge Regarding the first issue, an important critique points out people's limited computational capability relative to very complex situations. This argument is mainly associated with Herbert Simon's work, but it is made also ...

Google previewEncyclopedia of Social and Cultural Anthropology (1996)

by Alan Barnard, Jonathan Spencer

Rationality and its cognates (rational, reason, reasonableness), are, in anthropology, usually ascribed to ideas or thought ('magic is irrational, science is rational' ), to action ('cloud-seeding is rational, rain dance is irrational'), or to social ...

Online dictionaries and encyclopedias with entries for Rationality

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Photos about Rationality

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Video language resources about Rationality

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View more videos about Instrumental rationality.

See also the pronunciation examples of Rationality!

Quotes about Rationality

Rationality is the recognition of the fact that nothing can alter the truth and nothing can take precedence over that act of perceiving it. (Ayn Rand)
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Scrabble value of R1A1T1I1O1N1A1L1I1T1Y4

The value of this 11-letter word is 14 points, but it's not an accepted word in the Official Scrabble Players Dictionary.

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