What are the opposite words for rational?
The word rational is often associated with reason, logic, and common sense. Its antonyms, on the other hand, are the exact opposite. Some common antonyms for rational include irrational, illogical, nonsensical, and unreasonable. These words denote actions or thoughts that are not based on sound judgment or clear thinking. Irrational behavior often lacks coherence or sense, while illogical reasoning is not based on any clear foundation. Nonsensical thoughts or actions are often disconnected and absurd, while unreasonable actions are not justified by any sound evidence. Understanding the antonyms of rational helps us appreciate the importance of logical and critical thinking in decision-making processes.
Table of Contents
- absurd
- foolish
- meaningless
- deranged
- senseless
- insane
- thoughtless
- lunatic
- arbitrary
- balmy
- crazy
- fantastic
- loopy
- pert
- preposterous
- psychotic
- unscientific
- unthinkable
- delirious
- demented
- illogical
- impracticable
- impractical
- irrational
- mad
- nutty
- unrealistic
- unreasonable
- unsound
- unsystematic
- unworkable
- wanton
- ridiculous, senseless
- all
- whimsical, chance
- comfortable with respect to weather
- mentally strange
- mentally imbalanced
- crazy, insane
- strange, different; imaginary
- nonsensical, idiotic
- mentally ill; foolish
- illogical, senseless
- crazy, mad
- mentally deranged
- out of one's mind
- ridiculous, bizarre
- realistic; of sound mind
- silly, meaningless
- absent-minded, unobservant
- not logical or sensible
- not well; flimsy
- incredible, unusual
- cruel, malicious
- Other relevant words
- Other antonyms
- absurd
- foolish
-
meaningless
- doublespeak,
- unmeaning,
- Purportless,
- Unpurposed,
- doesnt cut it,
- doubletalk,
- good for nothing,
- in consequential,
- in significant,
- in substantial,
- in-consequential,
- in-substantial,
- more double-talk,
- more doublespeak,
- more good for nothing,
- more nothing,
- more purportless,
- more unmeaning,
- more unpurposed,
- most double talk,
- most double-talk,
- most doublespeak,
- most doubletalk,
- most good for nothing,
- most good-for-nothing,
- most nothing,
- most purportless,
- most unmeaning,
- most unpurposed,
- un meaning,
- un-important,
- un-meaning,
- un-purposed.
- deranged
- senseless
- insane
-
thoughtless
- undiscerning,
- unreflective,
- Irreflective,
- empty headed,
- emptyheaded,
- in advertent,
- in comprehensible,
- in-advertent,
- in-attentive,
- lamebrained,
- more bovine,
- more irreflective,
- more lamebrained,
- more undiscerning,
- more unreflective,
- most bovine,
- most irreflective,
- most lamebrained,
- most undiscerning,
- most unreflective,
- un discerning,
- un heeding,
- un reflective,
- un-discerning,
- un-heeding,
- un-mindful,
- un-reflective.
- lunatic
- arbitrary
- balmy
-
crazy
- aper,
- derisory,
- ill-conceived,
- nuts,
- of unsound mind,
- round the bend,
- unglued,
- mad as a hatter,
- apest,
- bats belfry,
- bats in belfry,
- bats in the belfry,
- bats the belfry,
- beyond all reason,
- beyond reason,
- ill conceived,
- illconceived,
- in appropriate,
- in-appropriate,
- mad as hatter,
- mad as march hare,
- more derisory,
- more ill-conceived,
- more illconceived,
- more screwball,
- more unglued,
- more unzipped,
- most derisory,
- most flipped,
- most ill conceived,
- most ill-conceived,
- most schizo,
- most unglued,
- most unzipped,
- nutty as fruitcake,
- out all reason,
- out lunch,
- out mind,
- out of all reason,
- out of mind,
- out of one tree,
- out of one's tree,
- out of ones mind,
- out of ones tree,
- out of reason,
- out of tree,
- out one mind,
- out one tree,
- out one's mind,
- out ones mind,
- out ones tree,
- out tree,
- round bend,
- schizo,
- screw loose,
- un glued,
- un hinged,
- un-balanced,
- un-glued,
- un-hinged,
- un-zipped.
- fantastic
- loopy
- pert
- preposterous
- psychotic
- unscientific
-
unthinkable
- Incogitable,
- un-ordinary,
- beyond belief,
- beyond possibility,
- extra ordinary,
- extra-ordinary,
- in cogitable,
- in conceivable,
- in supportable,
- in-cogitable,
- in-conceivable,
- in-supportable,
- more incogitable,
- most incogitable,
- un common,
- un commoner,
- un commonest,
- un imaginable,
- un ordinary,
- un thinkable,
- un-common,
- un-commoner,
- un-imaginable,
- un-thinkable.
-
delirious
- be wildered,
- be-wildered,
- dis arranged,
- dis ordered,
- dis-arranged,
- dis-ordered,
- in-coherent,
- more deviate,
- more disarranged,
- more maniac,
- most deviate,
- most disarranged,
- most maniac,
- off head,
- off one head,
- off one's head,
- off ones head,
- out head,
- out of head,
- out of one head,
- out of one skull,
- out of one's head,
- out of ones skull,
- out one head,
- out one skull,
- out one's skull,
- out ones head,
- out ones skull,
- un settled,
- un-settled.
-
demented
- crackbrained,
- hysterical,
- schizoid,
- whacko,
- nutty as a fruitcake,
- be mused,
- be-mused,
- in ozone,
- in the ozone,
- more crackbrained,
- more maniacal,
- more schizoid,
- more whacko,
- most crackbrained,
- most manic,
- most schizoid,
- most whacko,
- out gourd,
- out of gourd,
- out of one gourd,
- out of one's gourd,
- out of ones gourd,
- out one gourd,
- out one's gourd,
- out one's tree,
- out ones gourd,
- schitzier,
- schitziest,
- schitzy,
- un balanced,
- un soundest.
-
illogical
- casuistic,
- illogical,
- irrelevant,
- meaningless,
- self-contradictory,
- sophistical,
- not following,
- without basis,
- without foundation,
- in conclusive,
- in consequent,
- in correct,
- in valid,
- in-conclusive,
- in-consequent,
- in-correct,
- in-valid,
- more casuistic,
- more self contradictory,
- more self-contradictory,
- more selfcontradictory,
- more sophistical,
- most casuistic,
- most self contradictory,
- most self-contradictory,
- most selfcontradictory,
- most sophistical,
- self contradictory,
- selfcontradictory,
- un connected,
- un proved,
- un substantial,
- un tenable,
- un-connected,
- un-proved,
- un-substantial,
- un-tenable.
- impracticable
-
impractical
- inoperable,
- nonfunctional,
- nonviable,
- unserviceable,
- non-viable,
- Unbusinesslike,
- in applicable,
- in efficacious,
- in feasible,
- in operable,
- in-applicable,
- in-efficacious,
- in-feasible,
- in-operable,
- ivory-tower,
- ivorytower,
- more infeasible,
- more inoperable,
- more ivory-tower,
- more ivorytower,
- more nonfunctional,
- more nonviable,
- more unbusinesslike,
- more unserviceable,
- most infeasible,
- most inoperable,
- most ivory tower,
- most ivory-tower,
- most ivorytower,
- most nonfunctional,
- most unserviceable,
- no go,
- non functional,
- non-functional,
- starry eyed,
- starryeyed,
- un attainable,
- un businesslike,
- un feasible,
- un serviceable,
- un usable,
- un-attainable,
- un-businesslike,
- un-feasible,
- un-serviceable,
- un-usable,
- won't fly,
- wont fly.
-
irrational
- cockamamie,
- mindless,
- reasonless,
- unreasoning,
- off-the-wall,
- dis connected,
- dis jointed,
- dis-connected,
- dis-jointed,
- more cockamamie,
- more off the wall,
- more off-the-wall,
- more reasonless,
- more unreasoning,
- most cockamamie,
- most off the wall,
- most off-the-wall,
- most reasonless,
- most unreasoning,
- un reasoning,
- un stable,
- un stabler,
- un stablest,
- un thinking,
- un-reasoning,
- un-stable,
- un-stabler,
- un-stablest,
- un-thinking,
- un-wise.
- mad
- nutty
- unrealistic
-
unreasonable
- overkill,
- pricey,
- unwarrantable,
- up here,
- Absonant,
- priciest,
- uncalledfor,
- up to here,
- too great,
- full of hot air,
- all wet,
- head-strong,
- unrightful,
- costing an arm a leg,
- costing an arm and a leg,
- costing an arm and leg,
- costing an arm leg,
- costing arm a leg,
- costing arm and a leg,
- costing arm and leg,
- costing arm leg,
- in temperate,
- in-ordinate,
- in-temperate,
- more overkill,
- more too too,
- more too-too,
- more tootoo,
- more unrightful,
- more unwarrantable,
- most absonant,
- most too too,
- most tootoo,
- most unwarrantable,
- over kill,
- over much,
- over-kill,
- too too,
- too-too,
- tootoo,
- un conscionable,
- un due,
- un duest,
- un fair,
- un fairer,
- un fairest,
- un just,
- un juster,
- un justest,
- un justifiable,
- un lawful,
- un reasonable,
- un reasoned,
- un rightful,
- un warrantable,
- un-conscionable,
- un-due,
- un-duer,
- un-duest,
- un-fair,
- un-fairer,
- un-fairest,
- un-just,
- un-juster,
- un-justest,
- un-justifiable,
- un-lawful,
- un-reasonable,
- un-reasoned,
- un-rightful,
- un-warrantable,
- un-warranted.
-
unsound
- flawed,
- unbacked,
- in poor health,
- dis eased,
- dis-eased,
- in accurate,
- in firm,
- in firmer,
- in firmest,
- in secure,
- in securer,
- in securest,
- in-firmer,
- in-firmest,
- in-secure,
- in-securer,
- in-securest,
- more unbacked,
- most unbacked,
- un backed,
- un healthier,
- un healthiest,
- un healthy,
- un reliable,
- un sound,
- un sounder,
- un steadier,
- un steadiest,
- un steady,
- un-backed,
- un-healthiest,
- un-healthy,
- un-reliable,
- un-sound,
- un-sounder,
- un-soundest,
- un-steadier,
- un-steadiest.
- unsystematic
- unworkable
- wanton
- ridiculous, senseless
- all
- whimsical, chance
- comfortable with respect to weather
- mentally strange
- mentally imbalanced
- crazy, insane
- strange, different; imaginary
- nonsensical, idiotic
- mentally ill; foolish
- illogical, senseless
- crazy, mad
- mentally deranged
- out of one's mind
- ridiculous, bizarre
- realistic; of sound mind
- silly, meaningless
- absent-minded, unobservant
- not logical or sensible
- not well; flimsy
- incredible, unusual
- cruel, malicious
-
Other relevant words
- loco,
- casuistic,
- flimsy,
- futile,
- groundless,
- ignorant,
- implausible,
- invalid,
- loony,
- misguided,
- misleading,
- nonintellectual,
- obtuse,
- physical,
- preposterous,
- silly,
- simple,
- sophistic,
- sottish,
- specious,
- thoughtless,
- unarticulated,
- unconvincing,
- undiscerning,
- uninformed,
- unjustified,
- unscientific,
- unthinking,
- Eristic,
- Unreasoned,
- nonthinking,
- uncompelling.
- Other antonyms
Antonym of the day
leading the way
- Antonyms:
- abandon, follow, misguide.
