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
To inject greater rationality into the system, a unified budget took effect in 1969.
—
Steve H. Hanke, Fortune, 14 May 2026
Tap into desire—or, better yet, anxiety—and rationality goes out the window.
—Literary Hub, 28 Apr. 2026
Gigerenzer emphasizes the concept of ecological rationality, arguing that the effectiveness of a heuristic depends on the context in which it is applied.
—Bystephen Pitt-Walker, Forbes.com, 25 Mar. 2026
Reducing love entirely to brain chemistry, or rationality entirely to cognitive biases, treats a partial explanation as a complete one.
—Alejandro Hortal-Sánchez, The Conversation, 24 Mar. 2026
See All Example Sentences for rationality
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Steve H. Hanke, Fortune, 14 May 2026
Tap into desire—or, better yet, anxiety—and rationality goes out the window.
—Literary Hub, 28 Apr. 2026
Gigerenzer emphasizes the concept of ecological rationality, arguing that the effectiveness of a heuristic depends on the context in which it is applied.
—Bystephen Pitt-Walker, Forbes.com, 25 Mar. 2026
Reducing love entirely to brain chemistry, or rationality entirely to cognitive biases, treats a partial explanation as a complete one.
—Alejandro Hortal-Sánchez, The Conversation, 24 Mar. 2026
See All Example Sentences for rationality
Cite this Entry
“Rationality.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rationality. Accessed 20 May. 2026.
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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