Antonyms for Rational
ˈræʃ ə nl, ˈræʃ nlra·tio·nal

English Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. rational

   Sagacious refers to a power of tracing the hidden or recondite by slight indications, as by instinct or intuition; it is not now applied to mere keenness of sense-perception. We do not call a hound sagacious in following a clear trail; but if he loses the scent, as at the edge of a stream, and circles around till he strikes it again, his conduct is said to be sagacious. In human affairs sagacious refers to a power of ready, far-reaching, and accurate inference from observed facts perhaps in themselves very slight, that seems like a special sense; or to a similar readiness to foresee the results of any action, especially upon human motives or conduct — a kind of prophetic common sense. Sagacious is a broader and nobler word than shrewd, and not capable of the invidious sense which the latter word often bears; on the other hand, sagacious is less lofty and comprehensive than wise in its full sense, and more limited to matters of direct practical moment. Compare ASTUTE; WISDOM.

   Antonyms:
   absurd, dull, foolish, futile, ignorant, irrational, obtuse, senseless, silly, simple, sottish, stupid, undiscerning, unintelligent

   Synonyms:
   able, acute, apt, clear-sighted, discerning, intelligent, judicious, keen, keen-sighted, keen-witted, perspicacious, quick of scent, quick-scented, sagacious, sage, sensible, sharp, sharp-witted, shrewd, wise

Complete Dictionary of Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. rational

   Antonyms:
   insane, unsound, weak, silly, unintelligent, absurd, injudicious, fanciful, extravagant, preposterous, unreasoning, unreasonable, irrational, exorbitant

   Synonyms:
   sane, sound, intelligent, reasoning, reasonable, judicious, sober, sensible, probable, equitable, moderate, fair

Matched Categories

1. • Math

Princeton's WordNetRate these antonyms:5.0 / 2 votes

1. rational number, rationaladjective

   an integer or a fraction

   Antonyms:
   physical, irrational, nonintellectual, unreasoning, superstitious, blind, nonrational, reasonless

   Synonyms:
   rational, rational number

2. rationaladjective

   consistent with or based on or using reason

   "rational behavior"; "a process of rational inference"; "rational thought"

   Antonyms:
   nonrational, unreasoning, irrational, reasonless, nonintellectual, blind, physical, superstitious

   Synonyms:
   intellectual, noetic

3. intellectual, rational, noeticadjective

   of or associated with or requiring the use of the mind

   "intellectual problems"; "the triumph of the rational over the animal side of man"

   Antonyms:
   nonrational, irrational, reasonless, unreasoning, physical, nonintellectual, blind, superstitious

   Synonyms:
   intellectual, cerebral, rational, noetic

4. rationaladjective

   capable of being expressed as a quotient of integers

   "rational numbers"

   Antonyms:
   reasonless, physical, irrational, blind, nonrational, superstitious, nonintellectual, unreasoning

   Synonyms:
   intellectual, noetic

5. rationaladjective

   having its source in or being guided by the intellect (as distinguished from experience or emotion)

   "a rational analysis"

   Antonyms:
   irrational, superstitious, blind, unreasoning, nonrational, physical, reasonless, nonintellectual

   Synonyms:
   intellectual, noetic

Synonyms, Antonyms & Associated WordsRate these synonyms:0.0 / 0 votes

1. rationaladjective

   Antonyms:
   irrational, insane, injudicious, unwise, unreasonable

   Synonyms:
   reasoning, intelligent, sane, sound, judicious, wise, reasonable, equitable

Editors ContributionRate these antonyms:0.0 / 0 votes

1. demagogic

   Submitted by anonymous on May 31, 2020  

How to use Rational in a sentence?

1. Michael Cole:

   The developments in Russia demonstrate the assumptions that autocratic leadership will always make rational decisions have been thoroughly destroyed by Vladimir Putin -- in Vladimir Putin decision to invade Ukraine, it does not mean that Xi Jinping will tomorrow decide to use force against Taiwan because Xi Jinping friend in Moscow decided to do so against Ukraine.

2. Asra Nomani:

   Most rational thinkers agree that public schools should not be home to political activism, from any side of the political divide, but public schools across America, from Boston to Seattle, have opened their doors for activist teachings from the divisive Black Lives Matter political organization, under the cover of a week of action, called ‘Black Lives Matter at School,’ children as young as 5 years old are being trained how to be political activists.

3. Gary Ross:

   The Saudis are probably worried about everyone else reducing capex as a result of low oil prices and about non-OPEC output falling off a cliff at some point. We all know that supply disruptions are unpredictable but they are certain, the increase in Saudi rig numbers is like a signal to the industry - let's be rational. We will need supply growth in the future.

4. Tim Stanley:

   Republican voters are far more rational than these early poll numbers suggest.

5. Raj Peter Bhakta:

   There was part of me that was petrified. These are rich and powerful people who threatened me with ruin. No rational person wouldn’t take that threat seriously. On the other hand, I thought about what I was fighting for, this is my farm, where I live with my two daughters and my pregnant wife. This is not just a business, this is not some piece of dirt, like a mall, some piece of real estate, this is my home. I have put my heart and soul into this. I have gotten our employees to buy into a long-term vision of creating the finest whiskey company in the world and I felt like I needed to fight for that, for this being the right thing for our society and civilization, as opposed to gangster capitalism.

How to pronounce Rational?

How to say Rational in sign language?

Words popularity by usage frequency