rational

[ rash-uh-nl, rash-nl ]

/ ˈræʃ ə nl, ˈræʃ nl /

SEE SYNONYMS FOR rational ON THESAURUS.COM

adjective

agreeable to reason; reasonable; sensible: a rational plan for economic development.

having or exercising reason, sound judgment, or good sense: a calm and rational negotiator.

being in or characterized by full possession of one's reason; sane; lucid: The patient appeared perfectly rational.

endowed with the faculty of reason: rational beings.

of, relating to, or constituting reasoning powers: the rational faculty.

proceeding or derived from reason or based on reasoning: a rational explanation.

Mathematics.

capable of being expressed exactly by a ratio of two integers.
(of a function) capable of being expressed exactly by a ratio of two polynomials.

Classical Prosody. capable of measurement in terms of the metrical unit or mora.

noun

Mathematics. rational number.

Origin of rational

1350–1400; Middle English racional < Latin ratiōnālis, equivalent to ratiōn- (stem of ratiō) reason + -ālis -al¹

SYNONYMS FOR rational

2 intelligent, wise, judicious, sagacious, enlightened.

6 See reasonable.

SEE SYNONYMS FOR rational ON THESAURUS.COM

ANTONYMS FOR rational

2 stupid.

3 insane.

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OTHER WORDS FROM rational

ra·tion·al·ly, adverb ra·tion·al·ness, noun an·ti·ra·tion·al, adjective an·ti·ra·tion·al·ly, adverb

hy·per·ra·tion·al, adjective hy·per·ra·tion·al·ly, adverb non·ra·tion·al, adjective non·ra·tion·al·ly, adverb o·ver·ra·tion·al, adjective o·ver·ra·tion·al·ly, adverb pre·ra·tion·al, adjective qua·si-ra·tion·al, adjective qua·si-ra·tion·al·ly, adverb trans·ra·tion·al, adjective trans·ra·tion·al·ly, adverb ul·tra·ra·tion·al, adjective ul·tra·ra·tion·al·ly, adverb un·ra·tion·al, adjective un·ra·tion·al·ly, adverb

WORDS THAT MAY BE CONFUSED WITH rational

rational reasonable (see synonym study at reasonable)

Words nearby rational

ratio test, ratiocinate, ratiocination, ratiometer, ration, rational, rational form, rational function, rational horizon, rational number, rational operation

Example sentences from the Web for rationally

When I fielded telephone calls, my attempts to rationally discuss the subject were complete failures.

Rebels Rise Again Over Flag Banning |Robert Khayat |July 28, 2014 |DAILY BEAST
That is a message that might rationally resonate with independents, because it is rooted in fact.

Policy Black Hole: Mitt Romney Keeps His Ideas To Himself |John Avlon |June 22, 2012 |DAILY BEAST
The rational mind of course is correct, rationally—but we are not rational animals.

Circumcision’s Deadly Fault Line: Rationality vs. the Metzitzah B’Peh |Kent Sepkowitz |June 10, 2012 |DAILY BEAST
In Part 1, we learn that political opinions don't come from rationally developing arguments.

David's Book Club: The Righteous Mind |Noah Kristula-Green |April 9, 2012 |DAILY BEAST

Annie Martin is still too peeved to rationally discuss comic Steve Harvey.

Steve Harvey's Bad Romance |Allison Samuels |February 16, 2011 |DAILY BEAST
It will not be easy to imagine any third mode materially different, which could rationally be proposed.

The Federalist Papers |Alexander Hamilton, John Jay, and James Madison
Few copies of the New Testament have been sold; yet what else could be rationally expected in these latter times?

Letters of George Borrow |George Borrow
Rationally conceived they are not only consonant with Determinism, but each of them implies it.

Determinism or Free-Will? |Chapman Cohen
We cannot rationally suppose that Adam was a stranger to his duty, either in its nature, manner, or extent.

The Mosaic History of the Creation of the World |Thomas Wood
Since he himself is the way, can we rationally conclude that he would do anything for a guide to us that is unimportant?

Life and Labors of Elder John Kline, the Martyr Missionary |John Kline

British Dictionary definitions for rationally

rational

/ (ˈræʃənəl) /

adjective

using reason or logic in thinking out a problem

in accordance with the principles of logic or reason; reasonable

of sound mind; sane the patient seemed quite rational

endowed with the capacity to reason; capable of logical thought man is a rational being

maths expressible as a ratio of two integers or polynomials a rational number; a rational function

noun

maths a rational number

Derived forms of rational

rationally, adverb rationalness, noun

Word Origin for rational

C14: from Latin ratiōnālis, from ratiō reason

Medical definitions for rationally

rational

[ răsh′ə-nəl ]

adj.

Having or exercising the ability to reason.

Influenced by reasoning rather than by emotion.

Of sound mind; sane.

Based on scientific knowledge or theory rather than practical observation.

BROWSE DICTIONARY

Learning

rational

adjective

noun

Origin of rational

SYNONYMS FOR rational

ANTONYMS FOR rational

OTHER WORDS FROM rational

WORDS THAT MAY BE CONFUSED WITH rational

Words nearby rational

Example sentences from the Web for rationally

British Dictionary definitions for rationally

adjective

noun

Derived forms of rational

Word Origin for rational

Medical definitions for rationally

adj.

BROWSE DICTIONARY

Learning

rational

adjective

noun

Origin of rational

SYNONYMS FOR rational

ANTONYMS FOR rational

OTHER WORDS FROM rational

WORDS THAT MAY BE CONFUSED WITH rational

Words nearby rational

Words related to rationally

Example sentences from the Web for rationally

(adsbygoogle = window.adsbygoogle || []) .push({}); British Dictionary definitions for rationally

adjective

noun

Derived forms of rational

Word Origin for rational

Medical definitions for rationally

adj.

British Dictionary definitions for rationally