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
These categories were not simply seen as opposite, but in a hierarchy with objectivity and rationality as superior.
—
Sara Giordano, The Conversation, 4 Sep. 2025
Everyone who dies in the film—and everyone does die, including Santino (Marcelo Michinaux), Pedro’s young son—does so because Pedro and Jimi act without thought given to consequences, much less to rationality.
—Andy Crump, Time, 9 Aug. 2025
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
The most worrisome aspect is that striking first in these circumstances has an element of rationality.
—Robert A. Pape, Chicago Tribune, 20 July 2025
See All Example Sentences for rationality
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Sara Giordano, The Conversation, 4 Sep. 2025
Everyone who dies in the film—and everyone does die, including Santino (Marcelo Michinaux), Pedro’s young son—does so because Pedro and Jimi act without thought given to consequences, much less to rationality.
—Andy Crump, Time, 9 Aug. 2025
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
The most worrisome aspect is that striking first in these circumstances has an element of rationality.
—Robert A. Pape, Chicago Tribune, 20 July 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 8 Sep. 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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