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rational

1 of 2

adjective

ra·​tio·​nal ˈrash-nəl How to pronounce rational (audio)
ˈra-shə-nᵊl
1
a
: having reason or understanding
b
: relating to, based on, or agreeable to reason : reasonable
a rational explanation
rational behavior
2
: involving only multiplication, division, addition, and subtraction and only a finite number of times
3
: relating to, consisting of, or being one or more rational numbers
a rational root of an equation
rationally adverb
rationalness noun

rational

2 of 2

noun

: something rational
specifically : rational number

Example Sentences

Adjective human beings are rational creatures insisted there was a rational explanation for the strange creaking noises and that there were no such things as ghosts
Recent Examples on the Web
Adjective
Chris: There was a time element, which is totally rational, in the sense of a live TV show. Jem Aswad, Variety, 8 Sep. 2022 Given the circumstances, that was perfectly rational. Chris Morris, Fortune, 7 Sep. 2022 Looking at the frequency of major cyberattacks over the last decade, this skepticism is perfectly rational. Howard Taylor, Forbes, 6 July 2022 Leave it to Whittingham to be rational about a big-picture topic that has engulfed much of the fan base since the Rose Bowl. Josh Newman, The Salt Lake Tribune, 21 Mar. 2022 At low income levels, worrying about money can be perfectly rational. Arthur C. Brooks, The Atlantic, 9 Dec. 2021 The inverse relationship between quantity demanded and price is the core proposition in economic science, which embodies the presupposition that human choice behavior is sufficiently rational to allow predictions to be made. Timothy Noah, The New Republic, 14 Oct. 2021 While society often judges young adults harshly for making decisions like these and delaying some of the responsibilities of adulthood, these are rational responses to economic instability. Alexis Redding, The Atlantic, 31 Aug. 2022 Halard’s skills were tested both by the challenges of creating a rational sequence of beautiful rooms and outbuildings, and by the local planning committees. Hamish Bowles, Vogue, 30 Aug. 2022
Noun
Empirical inquiry—often considered strictly a province of the rational—can also be fueled by fervent belief. Faith Hill, The Atlantic, 6 May 2022 But other states and cities are taking their positive revenues as a rational for deep tax cuts. Richard Mcgahey, Forbes, 14 Apr. 2022 The gas supply in 1974 was reported to have bottomed out at only about 20% below normal, but drivers acted about 50% below rational. Los Angeles Times, 22 Mar. 2022 In the book, Starhawk defines magic as awakening deeper levels of consciousness beyond the rational. WSJ, 8 Dec. 2021 Darkside is something entirely distinct, a surreal form of magic at war with the rational. Washington Post, 23 July 2021 In her 2017 essay, Khan also pointed to platforms’ creating incentives for companies to favor growth over profits, which ostensibly makes predatory pricing rational. Jessica Melugin, National Review, 22 June 2021 Advocates for race-conscious admissions accept the diversity rational as an article of faith. Michael T. Nietzel, Forbes, 1 June 2021 Much of the rational of the calls to expand the court came from the fact that former President Donald Trump had appointed three justices, shifting the balance. Peter Suciu, Forbes, 15 Apr. 2021 See More

Word History

Etymology

Adjective

Middle English racional, from Anglo-French racionel, from Latin rationalis, from ration-, ratio

First Known Use

Adjective

14th century, in the meaning defined at sense 1a

Noun

1601, in the meaning defined above

Time Traveler
The first known use of rational was in the 14th century

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