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What is another word for unsubstantial?

Need synonyms for unsubstantial? Here's a list of similar words from our thesaurus that you can use instead.

Contexts ▼

Not having a material or physical form

Weak, feeble, or lacking in strength

Lacking physical strength, weight or firmness

Having no basis in reality

Unsound, not backed by facts

Flimsy, or made of flimsy material

Not likely to be true or to happen

Too small or unimportant to be worth consideration

Of unclear or uncertain identity or nature

(of a mixture or effect) Delicately complex and understated

Subject to dispute or questions

Dreamy and unaware of one's surroundings, for example because one is in love

Based on abstract reasoning

Useless or having no chance of success

Small in size, physique or stature

Emphasizing insignificance

… more ▼

Adjective

Not having a material or physical form

imperceptible to the touch

phantasmagorical

hard to describe

unable to be touched

extraterrestrial

out of this world

filled with dreams

too good for this world

more ❯

“Hearing this, Scipio strove eagerly to embrace his mother, but thrice the unsubstantial ghost eluded his grasp.”

Adjective

Weak, feeble, or lacking in strength

in declining health

rendered feeble

out of condition

under the weather

on the sick list

green about the gills

not in good shape

in poor condition

out of commission

not up to snuff

hospitalized^US

under medication

hospitalised^UK

confined to bed

like death warmed up

at death's door

not feeling well

the worse for wear

hypochondriacal

chronically ill

long in the tooth

no spring chicken

running temperature

feeling terrible

gone to rack and ruin

falling to pieces

more ❯

“Upon hearing his speech, the crowd dispersed, unconvinced by his unsubstantial tone and manner of speaking.”

Adjective

Lacking physical strength, weight or firmness

thrown together

more ❯

“Halliburton possessed what some critics called a slight and unsubstantial physique, compared with Hemingway's sturdier and more muscular frame.”

Adjective

Having no basis in reality

fool's paradise

all in one's head

all in the mind

out of this world

figment of imagination

product of someone's imagination

hard to swallow

castles in the air

more ❯

“We must distinguish an external object of nature from some unsubstantial figment of fantasy or hallucination that has little semblance of reality.”

Adjective

Unsound, not backed by facts

lacking substance

inconsequential

unsubstantiated

without foundation

not making sense

beyond the bounds of possibility

self-contradictory

hard to swallow

wide of the mark

counterintuitive

not backed up by evidence

wrongly deduced

wrongly inferred

unauthenticated

ill-thought-out

out of the ordinary

self-contradicting

won't hold water

not well thought out

unauthorized^US

not trustworthy

non-sequiturial

without justification

unauthorised^UK

difficult to believe

scarcely credible

logically fallacious

without explanation

out of commission

on the wrong track

seemingly correct

plausible but wrong

apparently right

highly unlikely

out of the question

beyond possibility

more ❯

“In the dawning light, the unsubstantial theory may melt away, but the ultimate facts will remain.”

Adjective

Flimsy, or made of flimsy material

light as a feather

more ❯

“The unsubstantial fabric of her dress left nothing to the imagination.”

Adjective

Not likely to be true or to happen

incomprehensible

imcomprehensible

hard to swallow

scarcely credible

out of the question

extremely doubtful

extremely implausible

extremely unlikely

extremely difficult to believe

not in the least likely

beyond the bounds of possibility

not to be thought of

won't hold water

hard to believe

difficult to believe

highly unlikely

not able to hold water

out of the ordinary

inconsequential

self-contradictory

unsubstantiated

beyond possibility

taking the cake

sensationalized^US

feather-brained

beyond all reason

out of all reason

sensationalised^UK

highly coloured

potentially dangerous

potentially false

not quite right

open to suspicion

under suspicion

inapprehensible

beyond one's wildest dreams

out of this world

castles in the air

not understandable

beyond the realm of reason

hardly possible

not worth considering

like herding cats

contrary to reason

more ❯

Adjective

Too small or unimportant to be worth consideration

inconsequential

of little consequence

of little import

of little importance

of minor importance

of no importance

of no consequence

nickel-and-dime

not worth mentioning

not worth speaking of

of no great concern

of little account

too little too late

lacking substance

not worth bothering about

twopenny-halfpenny

neither here nor there

beside the point

no great shakes

hardly worth mentioning

of no significance

of less importance

more ❯

Adjective

Of unclear or uncertain identity or nature

indistinguishable

unrecognisable^UK

unrecognizable^US

lacking definition

barely perceptible

hard to make out

open to question

incomprehensible

disorganised^UK

disorganized^US

hardly noticeable

hardly detectable

hard to understand

yet to be decided

hanging by a thread

unrecognized^US

unrecognised^UK

under advisement

under examination

open to discussion

as clear as mud

difficult to read

more ❯

Adjective

(of a mixture or effect) Delicately complex and understated

delicately complex

hardly detectable

hardly noticeable

more ❯

Adjective

Subject to dispute or questions

unsubstantiated

open to question

wide of the mark

open to suspicion

subject to debate

hard to believe

under suspicion

not quite right

potentially false

potentially dangerous

in no man's land

open to discussion

yet to be decided

hanging by a thread

on the back burner

far from certain

indistinguishable

without foundation

not backed up by evidence

more ❯

Adjective

Dreamy and unaware of one's surroundings, for example because one is in love

Adjective

Pale

Adjective

Based on abstract reasoning

unsubstantiated

in the abstract

based on guesswork

more ❯

Adjective

Useless or having no chance of success

no good to gundy

without rhyme or reason

inconsequential

counterproductive

good-for-nothing

without success

not worth the candle

disadvantageous

not having a prayer

with no chance of success

spinning one's wheels

wild goose chase

of no earthly use

lacking foundation

in vicious circle

without grounds

without foundation

not good enough

twopenny-halfpenny

nickel-and-dime

of little account

more ❯

Adjective

Small in size, physique or stature

miniaturized^US

knee-high to a grasshopper

miniaturised^UK

knee high to a grasshopper

a slip of a …

nickel-and-dime

not worth bothering about

invisible to the naked eye

extremely small

barely perceptible

undistinguishable

with no room to swing a cat

knee high to a gnat

close to the ground

economic of space

more ❯

Determiner

Emphasizing insignificance

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Related Words and Phrases

unsubstantially

unsubstantiality

unsubstantialities

See Also

What is the opposite of unsubstantial?
Sentences with the word unsubstantial
Words that rhyme with unsubstantial
What is the adverb for unsubstantial?
What is the adjective for unsubstantial?
What is the noun for unsubstantial?
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Nearby Words

unsubstantialities

unsubstantiality

unsubstantially

unsubstantiated

unsubstantiated information

unsubstantiatedly

13-letter Words Starting With

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