rationality
noun
ra·tio·nal·i·ty
ˌra-shə-ˈna-lə-tē 
plural rationalities
1
: the quality or state of being rational
2
: the quality or state of being agreeable to reason : reasonableness
3
: a rational opinion, belief, or practice
—usually used in plural
Examples of rationality in a Sentence
Recent Examples on the Web
The rationality of purchasing the Pollio billboard has been debated since the Kentucky Center for Investigative Reporting first reported the MacKenzie Scott donation largely paid for it.
—
Krista Johnson, The Courier-Journal, 31 July 2025
While the moon and Uranus harmonize, rationality is overrated.
—Usa Today, USA Today, 11 July 2025
Allison Williams, with her jaunty rationality, is back as Gemma, M3GAN’s creator, and the character has undergone a kind of penance.
—Owen Gleiberman, Variety, 25 June 2025
Courage is good, but so is sensitivity; seriousness is good, but so is frivolity; rationality is good, but so is imagination.
—Jenny Noyce, JSTOR Daily, 14 May 2025
See All Example Sentences for rationality
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Krista Johnson, The Courier-Journal, 31 July 2025
While the moon and Uranus harmonize, rationality is overrated.
—Usa Today, USA Today, 11 July 2025
Allison Williams, with her jaunty rationality, is back as Gemma, M3GAN’s creator, and the character has undergone a kind of penance.
—Owen Gleiberman, Variety, 25 June 2025
Courage is good, but so is sensitivity; seriousness is good, but so is frivolity; rationality is good, but so is imagination.
—Jenny Noyce, JSTOR Daily, 14 May 2025
See All Example Sentences for rationality
Cite this Entry
“Rationality.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rationality. Accessed 12 Aug. 2025.
Copy CitationKids Definition
rationality
noun
ra·tio·nal·i·ty
ˌrash-ə-ˈnal-ət-ē
: the quality or state of being rational
Medical Definition
rationality
noun
ra·tio·nal·i·ty
ˌrash-ə-ˈnal-ət-ē
plural rationalities
1
: the quality or state of being rational
2
: the quality or state of being agreeable to reason
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