Synonyms of fatuous

fatuous 1 of 2

adjective

ˈfa-chü-əs 

1

as in stupid

not having or showing an ability to absorb ideas readily

the fatuous questions that the audience members asked after the lecture suggested to the oceanographer that they had understood little

Synonyms & Similar Words

• stupid
• dumb
• slow
• simple
• thick
• idiotic
• foolish
• dull
• dense
• vacuous
• ignorant
• silly
• doltish
• obtuse
• dopey
• witless
• unintelligent
• unreasonable
• mindless
• irrational
• brain-dead
• oafish
• boneheaded
• senseless
• soft
• thickheaded
• brainless
• empty-headed
• dim
• opaque
• insane
• dorky
• weak-minded
• dunderheaded
• mad
• bonehead
• gormless
• lamebrain
• dim-witted
• moronic
• crazy
• pinheaded
• half-witted
• absurd
• chuckleheaded
• softheaded
• airheaded
• knuckleheaded
• thick-witted
• bubbleheaded
• lunkheaded
• slow-witted
• unsmart
• cretinous
• imbecile
• simpleminded
• birdbrained
• feebleminded
• unthinking
• uninformed
• nonsensical
• unintellectual
• asinine
• preposterous
• uneducated
• fool
• illogical
• zany
• loony
• daft
• unwise
• fallacious
• illiterate
• wacky
• lowbrow
• cuckoo
• untaught
• harebrained
• kooky
• dippy
• daffy
• nutty
• sappy
• invalid
• crackpot
• dotty
• screwball
• half-baked
• balmy
• cockeyed
• tomfool
• boobish
• featherheaded

Antonyms & Near Antonyms

• brilliant
• clever
• intelligent
• quick
• apt
• ingenious
• bright
• smart
• sharp
• acute
• keen
• fast
• wise
• insightful
• nimble
• astute
• intellectual
• resourceful
• sagacious
• perceptive
• thinking
• erudite
• cerebral
• keen
• brainy
• knowing
• savvy
• scholarly
• knowledgeable
• quick-witted
• discerning
• sharp-witted
• sage
• literate
• learned
• skilled
• reasonable
• perspicacious
• shrewd
• supersmart
• cunning
• sensible
• informed
• ultrasmart
• hyperintelligent
• wily
• educated
• sound
• trained
• highbrow
• valid
• logical
• rational
• prudent
• percipient
• crafty
• sapient
• judicious
• sane
• well-read
• foxy
• schooled

2

as in foolish

showing or marked by a lack of good sense or judgment

ignoring the avalanche warnings, the fatuous skiers continued on their way down the trail

Synonyms & Similar Words

• stupid
• foolish
• absurd
• silly
• insane
• mad
• idiotic
• crazy
• irrational
• ridiculous
• lunatic
• nonsensical
• dumb
• fool
• asinine
• unreasonable
• preposterous
• simple
• witless
• zany
• loony
• daft
• unwise
• wacky
• simpleminded
• unreasoning
• harebrained
• weak
• inept
• kooky
• dippy
• daffy
• nutty
• sappy
• senseless
• brainless
• crackpot
• cuckoo
• dotty
• weak-minded
• screwball
• wacko
• moronic
• barmy
• out to lunch
• slow
• half-baked
• jerky
• balmy
• half-witted
• unreasoned
• vacuous
• cockeyed
• crackbrained
• loony tunes
• gaga
• tomfool
• thoughtless
• bubbleheaded
• batty
• lunkheaded
• imbecile
• illogical
• doltish
• ludicrous
• dull
• empty-headed
• obtuse
• dopey
• clueless
• unintelligent
• fallacious
• laughable
• meshuga
• mindless
• dunderheaded
• farcical
• dense
• fruity
• brain-dead
• lamebrain
• oafish
• featherheaded
• thickheaded
• feebleminded
• opaque
• dim
• invalid
• pinheaded
• softheaded
• gormless
• dorky
• unsound
• dim-witted
• thick
• surd
• soft
• clownish
• nonrational
• chuckleheaded
• airheaded
• knuckleheaded
• buffoonish
• notional
• slow-witted
• ill-advised
• unconsidered
• birdbrained
• boobish
• chowderheaded

Antonyms & Near Antonyms

• sensible
• wise
• sound
• prudent
• judicious
• sane
• reasonable
• clever
• intelligent
• sagacious
• bright
• smart
• valid
• logical
• rational
• sage
• sapient
• brainy
• well-advised

fatuousness

2 of 2

noun

as in insanity

lack of good sense or judgment

the sheer fatuousness of the theory precludes any serious discussion

Synonyms & Similar Words

• insanity
• madness
• simplicity
• absurdity
• foolishness
• preposterousness
• unwisdom
• craziness
• inanity
• daftness
• imbecility
• witlessness
• silliness
• fatuity
• dottiness
• wackiness
• zaniness
• brainlessness
• asininity
• nuttiness
• lunacy
• folly
• stupidity
• stupidness
• balminess
• nonsensicalness
• idiocy
• senselessness
• obtuseness
• dullness
• dumbness
• irrationality
• mindlessness
• feeblemindedness
• unreasonableness
• slowness
• simplemindedness
• oafishness
• dopiness
• simpleness
• dippiness
• ridiculousness
• denseness
• fallacy
• vacuity
• doltishness
• ludicrousness
• kookiness
• weirdness
• gormlessness
• dim-wittedness
• laughableness

Antonyms & Near Antonyms

• wisdom
• sagacity
• prudence
• soundness
• sanity
• rationality
• validity
• reasonableness
• sapience
• sensibleness
• sagaciousness
• logicality
• perception
• insight
• reasonability
• sageness
• discernment
• logicalness
• rationalness
• percipience

Synonym Chooser

How is the word fatuous different from other adjectives like it?

Some common synonyms of fatuous are asinine, foolish, silly, and simple. While all these words mean "actually or apparently deficient in intelligence," fatuous implies foolishness, inanity, and disregard of reality.

fatuous conspiracy theories

When is it sensible to use asinine instead of fatuous?

In some situations, the words asinine and fatuous are roughly equivalent. However, asinine suggests utter and contemptible failure to use normal rationality or perception.

an asinine plot

When is foolish a more appropriate choice than fatuous?

Although the words foolish and fatuous have much in common, foolish implies the character of being or seeming unable to use judgment, discretion, or good sense.

foolish stunts

When would silly be a good substitute for fatuous?

While in some cases nearly identical to fatuous, silly suggests failure to act as a rational being especially by ridiculous behavior.

the silly antics of revelers

When might simple be a better fit than fatuous?

The words simple and fatuous can be used in similar contexts, but simple implies a degree of intelligence inadequate to cope with anything complex or involving mental effort.

considered people simple who had trouble with computers

Example Sentences

Recent Examples of fatuous

Adjective

The ongoing war between woke and anti-woke factions is a fatuous melodrama best left to the satirists. — Theater Critic, Los Angeles Times, 29 June 2026

This fatuous facial gesture is immediately relatable but also, as Locke discusses below, one that can be read in a number of different ways. — Andy Battaglia, ARTnews.com, 20 Nov. 2024

Schools must accept that mission statements without curriculum alignment are fatuous; the way schools define themselves is through the experience that flows from their curriculum. — Ray Ravaglia, Forbes, 1 Oct. 2024

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