Synonyms of vacuous

vacuous

adjective

ˈva-kyə-wəs 

1

as in devoid

lacking contents that could or should be present

a great vacuous space that should have been filled with an audience

Synonyms & Similar Words

• devoid
• empty
• barren
• blank
• vacant
• void
• hollow
• clean
• drained
• stark
• bare
• emptied
• toom
• open
• deserted
• uninhabited
• unfilled
• clear
• available
• free
• unoccupied
• depleted
• dry
• unfurnished
• unattended
• exhausted
• vacated
• abandoned
• forsaken

Antonyms & Near Antonyms

• full
• complete
• replete
• provided
• filled
• furnished
• occupied
• supplied
• overflowing
• packed
• flush
• teeming

2

as in stupid

not having or showing an ability to absorb ideas readily

a movie that was enthusiastically derided for its vacuous dialogue

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Synonym Chooser

How does the adjective vacuous contrast with its synonyms?

Some common synonyms of vacuous are blank, empty, vacant, and void. While all these words mean "lacking contents which could or should be present," vacuous suggests the emptiness of a vacuum and especially the lack of intelligence or significance.

a vacuous facial expression

When is it sensible to use blank instead of vacuous?

In some situations, the words blank and vacuous are roughly equivalent. However, blank stresses the absence of any significant, relieving, or intelligible features on a surface.

a blank wall

In what contexts can empty take the place of vacuous?

The meanings of empty and vacuous largely overlap; however, empty suggests a complete absence of contents.

an empty bucket

Where would vacant be a reasonable alternative to vacuous?

The words vacant and vacuous are synonyms, but do differ in nuance. Specifically, vacant suggests an absence of appropriate contents or occupants.

a vacant apartment

When would void be a good substitute for vacuous?

The synonyms void and vacuous are sometimes interchangeable, but void suggests absolute emptiness as far as the mind or senses can determine.

a statement void of meaning

Example Sentences

Recent Examples of vacuous

The result is a cacophonous temper tantrum, a vacuous and perfidious advertisement for military recruitment. —Gregory Nussen, Deadline, 28 Mar. 2025

The vacuous idea was to simply log into the generative AI app and start typing. —Lance Eliot, Forbes, 18 Mar. 2025

The president is an aspirational dictator, and no transparently vacuous rhetoric can undercut this glaring truth that informs the collusive efforts of Russian and U.S. actions. —Chicago Tribune, 24 Feb. 2025

This circles back to the comment about the Australian government’s investment in Australian cinema, is that when in the earlier drafts of the script, Ken (Grace’s husband) was just a bit vacuous, one-dimensional. —Destiny Jackson, Deadline, 4 Feb. 2025

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