ul·​tra·​ra·​tio·​nal ˌəl-trə-ˈra-sh(ə-)nəl How to pronounce ultrarational (audio)
: extremely rational or reasonable
an ultrarational decision
ultrarational theories

Examples of ultrarational in a Sentence

Recent Examples on the Web In the 1600s, as the ideas that would eventually produce the Enlightenment were gaining momentum, philosophers sought to create an ultrarational mode of communication. Matteo Wong, The Atlantic, 31 Dec. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultrarational.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of ultrarational was in 1894

Dictionary Entries Near ultrarational

Cite this Entry

“Ultrarational.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrarational. Accessed 22 Apr. 2024.

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