Un Substantial | Synonyms And Antonyms

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Best UN SUBSTANTIAL Synonyms And Antonyms

UN SUBSTANTIAL Synonyms

adjective not likely

fanciful

implausible

rare

unbelievable

unlikely

doubtful

dubious

far-fetched

flimsy

hundred-to-one

iffy

inconceivable

not expected

outside chance

questionable

slim

slim and none

uncertain

unconvincing

unheard of

unimaginable

unsubstantial

weak

UN SUBSTANTIAL antonyms

believable

likely

ordinary

plausible

probably

real

ostensible

possible

probable

tenable

UN SUBSTANTIAL Synonyms

adjective beyond reason, belief

extraordinary

implausible

impossible

improbable

incredible

mind-boggling

strange

unbelievable

unheard-of

unimaginable

unthinkable

fantastic

incomprehensible

incogitable

insupposable

phony

rare

reachy

staggering

thin

unconvincing

unknowable

unlikely

unsubstantial

weak

won't fly

won't wash

UN SUBSTANTIAL antonyms

believable

common

credible

familiar

likely

normal

plausible

possible

reasonable

tenable

usual

conceivable

fathomable

imaginable

UN SUBSTANTIAL Synonyms

adjective beyond belief

absurd

improbable

inconceivable

preposterous

ridiculous

unbelievable

unimaginable

far-fetched

fishy

flimsy

implausible

impossible

incogitable

insupposable

outlandish

out of the question

phony

questionable

rings phony

suspect

thin

unconvincing

unsubstantial

untenable

unthinkable

UN SUBSTANTIAL antonyms

believable

imaginable

plausible

reasonable

sensible

bad

credible

poor

possible

realistic

tenable

terrible

UN SUBSTANTIAL Synonyms

adjective sick, weak

ailing

anemic

decrepit

feeble

frail

ill

insecure

unstable

anile

debilitated

delicate

enfeebled

failing

faint

faltering

flimsy

fragile

halting

irresolute

laid low

lame

sensile

shaky

unsound

unsubstantial

vacillating

wavering

wobbly

UN SUBSTANTIAL antonyms

healthy

sound

strong

firm

hearty

robust

UN SUBSTANTIAL Synonyms

adjective not important; of no consequence

inconsequential

infinitesimal

irrelevant

meager

meaningless

minimal

minor

minuscule

negligible

paltry

pointless

senseless

trivial

unimportant

casual

immaterial

inappreciable

inconsiderable

lesser

light

lightweight

little

minim

minute

nondescript

nonessential

not worth mentioning

nugatory

petty

purportless

scanty

secondary

small

trifling

unsubstantial

UN SUBSTANTIAL antonyms

big

huge

important

large

major

meaningful

relevant

sensible

significant

substantial

useful

valuable

worthwhile

consequential

UN SUBSTANTIAL Synonyms

adjective weak, imaginary

fanciful

flimsy

illusory

puny

tenuous

unreal

unsubstantial

aerial

airy

chimerical

decrepit

ephemeral

false

feeble

fly-by-night

fragile

frail

idle

immaterial

imponderable

incorporeal

infirm

intangible

metaphysical

petty

poor

slender

slight

thin

too little too late

unsound

UN SUBSTANTIAL antonyms

genuine

real

serious

strong

substantial

thick

UN SUBSTANTIAL Synonyms

adjective indefinite, obscured

ethereal

unreal

abstract

eluding

hypothetical

impalpable

imponderable

slight

abstruse

airy

dim

elusive

evading

evanescent

evasive

imperceptible

inappreciable

incorporeal

indeterminate

insensible

invisible

rare

shadowy

slender

unapparent

uncertain

unobservable

unsubstantial

unsure

vague

UN SUBSTANTIAL antonyms

factual

real

definite

obvious

palpable

perceptible

tangible

UN SUBSTANTIAL Synonyms

adjective flimsy

cheap

defective

insubstantial

jerry-rigged

junky

makeshift

ramshackle

rickety

shoddy

slipshod

unsound

unsubstantial

UN SUBSTANTIAL Synonyms

adjective smaller, inferior

fewer

lesser

limited

lower

minor

minus

negative

secondary

subordinate

beneath

declined

deficient

depressed

diminished

excepting

lacking

not as great

reduced

shortened

shorter

slighter

subtracting

unsubstantial

without

UN SUBSTANTIAL antonyms

greater

higher

important

major

superior

bigger

more

UN SUBSTANTIAL Synonyms

adjective not heavy

agile

airy

buoyant

delicate

fluffy

lightweight

loose

slender

slight

small

thin

dainty

featherweight

flimsy

floating

little

petty

portable

sheer

trifling

atmospheric

downy

effervescent

ethereal

feathery

filmy

floatable

friable

frothy

gossamery

graceful

imponderous

inconsequential

insubstantial

light-footed

lithe

meager

nimble

porous

sandy

spongy

sprightly

sylphlike

tissuelike

trivial

unheavy

unsubstantial

weightless

UN SUBSTANTIAL antonyms

big

coarse

fat

heavy

large

strong

thick

clumsy

weighted

UN SUBSTANTIAL Synonyms

adjective small in amount, content

casual

faint

gentle

mild

moderate

slight

soft

sparse

thin

tiny

weak

minor

minuscule

minute

restricted

scanty

shoestring

trifling

wee

digestible

fractional

fragmentary

frivolous

frugal

hardly any

hardly enough

inadequate

inconsequential

inconsiderable

indistinct

insignificant

insufficient

modest

not many

not much

not rich

puny

superficial

trivial

unimportant

unsubstantial

UN SUBSTANTIAL antonyms

big

concentrated

great

heavy

large

huge

UN SUBSTANTIAL Synonyms

adjective not stiff; weak

flabby

listless

soft

supple

bending

debilitated

drooping

enervated

exhausted

flimsy

floppy

languishing

limber

loose

plastic

relaxed

slack

spent

tired

weakened

wearied

yielding

droopy

ductile

feeble

flaccid

flexible

flexuous

impressible

infirm

languid

lax

lethargic

pliable

pliant

spiritless

unsubstantial

worn-out

UN SUBSTANTIAL antonyms

firm

hard

rigid

activated

active

animated

energized

fresh

invigorated

lively

refreshed

restored

saved

solid

stiff

straight

strong

taut

tight

inflexible

unbending

UN SUBSTANTIAL Synonyms

adjective not physical; without physical presence

abstract

abstruse

esoteric

mystical

philosophical

spiritual

supernatural

theoretical

bodiless

deep

difficult

discarnate

eternal

fundamental

high-flown

ideal

immaterial

impalpable

incorporeal

insubstantial

intangible

intellectual

jesuitic

nonmaterial

nonphysical

numinous

oversubtle

preternatural

profound

recondite

superhuman

superior

supermundane

suprahuman

supramundane

supranatural

transcendental

unearthly

unfleshly

universal

unphysical

unreal

unsubstantial

UN SUBSTANTIAL antonyms

concrete

factual

obvious

physical

real

material

objective

solid

substantial

UN SUBSTANTIAL Synonyms

adjective fictional, not real

absent

negative

tenuous

vacant

airy

baseless

blank

chimerical

dead

defunct

departed

dreamlike

dreamy

empty

ethereal

extinct

extinguished

fancied

few and far between

flimsy

gone

gossamery

groundless

hallucinatory

hypothetical

illusory

imaginary

imagined

immaterial

imponderable

insubstantial

legendary

lost

missing

mythical

null

null and void

passed away

passed on

perished

shadowy

ungrounded

unreal

unsubstantial

vague

vaporous

void

without foundation

UN SUBSTANTIAL antonyms

actual

existent

existing

real

true

UN SUBSTANTIAL Synonyms

adjective light in color or effect

blanched

bleached

dim

dull

faded

faint

gray

haggard

pasty

poor

sallow

sick

thin

wan

white

anemic

ashen

ashy

bloodless

cadaverous

colorless

deathlike

doughy

feeble

ghastly

inadequate

ineffective

ineffectual

insubstantial

livid

lurid

pallid

sickly

spectral

unsubstantial

washed-out

waxen

waxlike

weak

whitish

UN SUBSTANTIAL antonyms

bright

clear

colored

colorful

dark

distinct

flushed

happy

healthy

heavy

intelligent

light

smart

strong

glowing

radiant

UN SUBSTANTIAL Synonyms

adjective small, insignificant

feeble

frail

inconsequential

measly

paltry

tiny

trivial

diminutive

fragile

half-pint

inferior

infirm

little

minor

niggling

nothing

peanut

peewee

petty

picayune

piddling

pint-sized

runt

shrimp

small-fry

small time

stunted

trifling

two-bit

unconsequential

underfed

undersized

undeveloped

unsound

unsubstantial

weak

weakly

wee

worthless

zero

zilch

UN SUBSTANTIAL antonyms

important

significant

strong

big

giant

huge

large

UN SUBSTANTIAL Synonyms

adjective disreputable

seedy

sordid

tacky

trashy

base

broken-down

cheap

common

dilapidated

flimsy

limp

low

mean

paltry

poor

run down

shabby

shoddy

squalid

unsubstantial

UN SUBSTANTIAL antonyms

fine

good

nice

reputable

respectable

UN SUBSTANTIAL Synonyms

adjective unreasonable

thin

flimsy

excessive

implausible

improbable

inconceivable

incredible

too much

unbelievable

unconvincing

unfair

unjust

unsubstantial

UN SUBSTANTIAL antonyms

attenuated

clear

diluted

intelligent

loose

reasonable

sensible

slight

smart

uncrowded

unfriendly

unsociable

watery

wise

UN SUBSTANTIAL Synonyms

adjective transparent, fine

delicate

flimsy

paper-thin

slim

translucent

wispy

attenuate

attenuated

rarefied

refined

sheer

slight

diaphanous

filmy

gossamer

permeable

rare

see-through

subtile

subtle

tenuous

unsubstantial

wafer-thin

UN SUBSTANTIAL antonyms

heavy

strong

thick

concentrated

dense

efficient

fat

inflated

obese

solid

undiluted

UN SUBSTANTIAL Synonyms

adjective deficient, weak

flat

flimsy

meager

poor

shallow

skimpy

sparse

thick

transparent

diluted

lame

scant

scattered

slight

stretched

feeble

implausible

improbable

inadequate

inconceivable

incredible

insubstantial

insufficient

questionable

scanty

scarce

sketchy

superficial

unbelievable

unconvincing

unpersuasive

unsubstantial

untenable

vapid

weak-kneed

UN SUBSTANTIAL antonyms

adequate

full

intelligent

reasonable

strong

substantial

sufficient

concentrated

dense

efficient

fat

heavy

inflated

obese

solid

undiluted

UN SUBSTANTIAL Synonyms

adjective beyond the imagination

astonishing

implausible

impossible

improbable

inconceivable

incredible

outlandish

preposterous

too much

unimaginable

unthinkable

beyond belief

cockamamie

cockeyed

doubtful

dubious

far-fetched

fishy

flaky

flimsy

for the birds

full of holes

harebrained

incogitable

kooky

lamebrained

open to doubt

past belief

phony

questionable

reaching

scatterbrained

screwy

staggering

suspect

thick

thin

unconvincing

unsubstantial

weak

won't hold water

won't wash

UN SUBSTANTIAL antonyms

believable

conceivable

credible

imaginable

likely

plausible

possible

reasonable

tenable

real

UN SUBSTANTIAL Synonyms

adjective fake, make-believe; hypothetical

dreamlike

false

fanciful

hallucinatory

illusory

immaterial

unbelievable

artificial

insubstantial

unsubstantial

aerial

chimerical

delusive

fabled

fabulous

fictitious

fictive

figmental

ideal

imaginary

imagined

impalpable

insincere

intangible

invented

legendary

misleading

mock

mythical

nebulous

nonexistent

notional

ostensible

phantasmagoric

pretended

seeming

sham

storybook

suppositious

supposititious

theoretical

visionary

UN SUBSTANTIAL antonyms

actual

authentic

genuine

real

UN SUBSTANTIAL Synonyms

adjective not well; flimsy

defective

erroneous

false

faulty

flawed

fragile

illogical

inaccurate

incorrect

insane

insecure

shaky

unbalanced

unhealthy

unreliable

unsafe

unstable

ailing

crazed

dangerous

decrepit

delicate

demented

deranged

diseased

fallacious

frail

ill

incongruous

infirm

in poor health

insubstantial

invalid

lunatic

mad

not solid

rickety

specious

tottering

unbacked

unhinged

unsteady

unsubstantial

unwell

weak

wobbly

UN SUBSTANTIAL antonyms

accurate

balanced

certain

correct

firm

healthy

honest

just

perfect

protected

rational

reasonable

reliable

right

safe

sane

secure

sound

stable

steady

strong

sure

true

valid

well

UN SUBSTANTIAL Synonyms

adjective not strong

anemic

feeble

fragile

frail

hesitant

powerless

shaky

sickly

sluggish

uncertain

unsteady

weakened

wobbly

debilitated

decrepit

delicate

effete

enervated

epicene

exhausted

faint

flaccid

flimsy

forceless

impuissant

infirm

insubstantial

irresolute

lackadaisical

languid

languorous

limp

makeshift

out of gas

prostrate

puny

rickety

rocky

rotten

senile

spent

spindly

supine

torpid

undependable

unsound

unsubstantial

wasted

wavering

weakly

UN SUBSTANTIAL antonyms

healthy

hearty

powerful

stable

strong

unbreakable

capable

fit

potent

UN SUBSTANTIAL Synonyms

adjective deficient, feeble

immature

inadequate

incomplete

ineffective

ineffectual

inept

lacking

limited

poor

shaky

slim

small

thin

faulty

flabby

flimsy

forceless

green

hollow

implausible

impotent

improbable

incompetent

inconceivable

inconclusive

incredible

invalid

pathetic

raw

shallow

slight

spineless

substandard

thick

unbelievable

unconvincing

unprepared

unqualified

unsatisfactory

unsubstantial

unsure

untrained

wanting

UN SUBSTANTIAL antonyms

able

adequate

competent

enough

strong

sufficient

capable

fit

potent

UN SUBSTANTIAL Synonyms

adjective incorrect

amiss

awry

bad

erroneous

false

inaccurate

misguided

mistaken

unsound

untrue

erring

fluffed

goofed

miscalculated

misconstrued

mishandled

out

askew

astray

at fault

counterfactual

defective

erratic

fallacious

faulty

in error

inexact

misfigured

not precise

not right

not working

off-target

on the wrong track

out of commission

out of line

out of order

perverse

rotten

sophistical

specious

spurious

ungrounded

unsatisfactory

unsubstantial

wide

UN SUBSTANTIAL antonyms

accurate

correct

good

honest

just

OK

precise

right

sound

true

valid

acceptable

appropriate

decent

moral

suitable

UN SUBSTANTIAL Synonyms

adjective buoyant

soaring

free

hollow

hovering

inflated

light

loose

sailing

swimming

volatile

wafting

nonsubmersible

unattached

unsinkable

unsubstantial

UN SUBSTANTIAL antonyms

submerged

sunk

UN SUBSTANTIAL Synonyms

adjective flimsy

fragile

frail

thin

UN SUBSTANTIAL antonyms

undeniable

well-founded

UN SUBSTANTIAL Synonyms

adjective unreal

imaginary

unbelievable

vaporous

visionary

UN SUBSTANTIAL antonyms

undeniable

well-founded

UN SUBSTANTIAL Synonyms

adjective hazy

dark

ghostly

shady

adumbral

chimerical

cloudy

dim

dreamy

faint

illusory

imaginary

indistinct

obscure

umbral

unsubstantial

vague

visionary

UN SUBSTANTIAL antonyms

bright

light

clear

distinct

UN SUBSTANTIAL Synonyms

adjective lacking substance

unreal

aerial

diaphanous

ethereal

filigree

imaginary

inane

shadowy

visionary

UN SUBSTANTIAL antonyms

undeniable

well-founded

UN SUBSTANTIAL Synonyms

adjective incorporeal

discarnate

discorporate

disembodied

immaterial

insubstantial

metaphysical

nonmaterial

spiritual

unbodied

unsubstantial

UN SUBSTANTIAL Synonyms

adjective dreamy

abstracted

astral

calming

chimerical

daydreaming

excellent

fanciful

fantastic

gentle

idealistic

imaginary

immaterial

impractical

intangible

introspective

introvertive

lulling

marvelous

misty

musing

mythical

nightmarish

otherworldly

out of this world

pensive

phantasmagoric

phantasmagorical

preoccupied

quixotic

relaxing

shadowy

soothing

speculative

unreal

unsubstantial

utopian

vague

visionary

whimsical

woolgathering

UN SUBSTANTIAL Synonyms

adjective immaterial

aerial

airy

apparitional

asomatous

bodiless

celestial

disbodied

discarnate

disembodied

dreamlike

dreamy

ethereal

ghostly

heavenly

impalpable

imponderable

incorporate

incorporeal

insensible

insubstantial

intangible

metaphysical

nonmaterial

psychic

shadowy

spectral

spiritlike

spiritual

subjective

supernatural

unbodied

uncorporal

unearthly

unembodied

unfleshly

unsubstantial

unworldly

wraithlike

UN SUBSTANTIAL Synonyms

adjective imaginary

abstract

apocryphal

apparitional

assumed

chimeric

chimerical

conceptual

deceptive

delusive

dreamed-up

dreamlike

dreamy

fabulous

fancied

fanciful

fantastic

fantastical

fictional

figmental

fool's paradise

hallucinatory

hypothetical

ideal

illusive

illusory

imaginative

imagined

legendary

made-up

mythological

nonexistent

phantasmal

phantasmic

quixotic

shadowy

spectral

supposed

supposititious

theoretical

trumped-up

unreal

unsubstantial

visionary

whimsical

UN SUBSTANTIAL Synonyms

adjective immaterial

aerial

airy

apparitional

asomatous

bodiless

celestial

disbodied

discarnate

disembodied

dreamlike

dreamy

ethereal

ghostly

heavenly

impalpable

imponderable

incorporate

incorporeal

insensible

insubstantial

intangible

metaphysical

nonmaterial

nonphysical

psychic

shadowy

spectral

spiritlike

spiritual

subjective

supernatural

uncorporal

unearthly

unembodied

unfleshly

unsubstantial

unworldly

wraithlike

UN SUBSTANTIAL Synonyms

adjective implausible

doubtful

dubious

farfetched

far-out

fishy

flimsy

for the birds

full of holes

impossible

improbable

inconceivable

incredible

obscure

problematic

puzzling

reachy

shaky

suspect

thin

too much

unbelievable

unconvincing

unreasonable

unsubstantial

weak

won't hold water

won't wash

UN SUBSTANTIAL Synonyms

adjective immaterial

aerial

airy

apparitional

asomatous

bodiless

celestial

disbodied

discarnate

disembodied

dreamlike

dreamy

ethereal

ghostly

heavenly

impalpable

imponderable

incorporate

incorporeal

insensible

insubstantial

intangible

metaphysical

nonmaterial

nonphysical

psychic

shadowy

spectral

spiritlike

spiritual

subjective

supernatural

unbodied

unearthly

unembodied

unfleshly

unsubstantial

unworldly

wraithlike

UN SUBSTANTIAL Synonyms

adjective pale

anemic

ashen

ashy

blanched

bleached

bloodless

cadaverous

colorless

deathlike

dim

doughy

dull

faded

faint

feeble

ghastly

gray

haggard

inadequate

ineffective

ineffectual

insubstantial

livid

lurid

pallid

pasty

poor

sallow

sick

sickly

spectral

thin

unsubstantial

wan

washed-out

watery

waxen

waxlike

weak

white

whitish

UN SUBSTANTIAL Synonyms

adjective infirm

ailing

anemic

anile

debilitated

decrepit

delicate

enfeebled

failing

faint

faltering

feeble

flimsy

fragile

frail

halting

ill

insecure

insubstantial

irresolute

laid low

lame

puny

sensile

shaky

unsound

unstable

unsubstantial

vacillating

wavering

weak

wobbly

UN SUBSTANTIAL Synonyms

adjective light

ethereal

inconsequential

trivial

agile

airy

atmospheric

buoyant

crumbly

dainty

delicate

downy

easy

effervescent

featherweight

feathery

filmy

flimsy

floatable

floating

fluffy

friable

frothy

gossamery

graceful

imponderous

insubstantial

light as a feather

light-footed

lightweight

lithe

little

loose

meager

nimble

petty

porous

portable

sandy

sheer

slender

slight

small

spongy

sprightly

sylphlike

thin

tissuelike

trifling

unheavy

unsubstantial

UN SUBSTANTIAL antonyms

important

significant

UN SUBSTANTIAL Synonyms

adjective illusory, romantic

fanciful

introspective

nightmarish

otherworldly

pensive

quixotic

utopian

whimsical

abstracted

astral

chimerical

daydreaming

excellent

fantastic

idealistic

imaginary

immaterial

impractical

intangible

introvertive

lulling

marvelous

misty

musing

mythical

out of this world

phantasmagoric

phantasmagorical

preoccupied

relaxing

shadowy

soothing

speculative

unreal

unsubstantial

vague

visionary

UN SUBSTANTIAL antonyms

real

horrible

terrible

unromantic

UN SUBSTANTIAL Synonyms

adjective fruitless, ineffective

barren

devoid

flat

hollow

idle

meaningless

worthless

dead

petty

silly

aimless

banal

cheap

deadpan

dishonest

dumb

expressionless

fatuous

frivolous

futile

ignorant

inane

ineffectual

inexpressive

insincere

insipid

jejune

nugatory

otiose

paltry

purposeless

senseless

trivial

unintelligent

unreal

unsatisfactory

unsubstantial

vacuous

vain

valueless

vapid

UN SUBSTANTIAL antonyms

filled

full

meaningful

productive

raised

useful

valuable

worthwhile

abundant

complete

copious

effective

entire

fruitful

replete

sated

satisfied

sufficient

UN SUBSTANTIAL Synonyms

adjective delicate, heavenly

airy

celestial

exquisite

ghostly

intangible

sublime

aerial

dainty

divine

empyreal

empyrean

fairy

filmy

fine

gaseous

gossamer

impalpable

insubstantial

light

rarefied

refined

spiritual

subtle

supernal

tenuous

unearthly

unsubstantial

unworldly

vaporous

vapory

UN SUBSTANTIAL antonyms

poor

earthly

indelicate

worldly

UN SUBSTANTIAL Synonyms

adjective not strong; light, thin

chiffon

decrepit

feeble

insubstantial

rickety

shaky

tacky

frail

gossamer

slight

wobbly

cut-rate

defective

delicate

diaphanous

fragile

gauzy

house of cards

inadequate

infirm

meager

papery

rinkydink

sheer

slapdash

sleazy

superficial

transparent

unsound

unsubstantial

weak

UN SUBSTANTIAL antonyms

strong

substantial

solid

sturdy

thick

firm

heavy

sound

tough

UN SUBSTANTIAL Synonyms

adjective unconvincing, implausible

baseless

false

feeble

frivolous

groundless

lame

thin

poor

trifling

assailable

contemptible

controvertible

fallacious

illogical

improbable

inadequate

inane

inconceivable

incredible

inept

puerile

shallow

superficial

transparent

trivial

unbelievable

ungrounded

unpersuasive

unreasonable

unsatisfactory

unsubstantial

weak

weakly

wishful

UN SUBSTANTIAL antonyms

solid

strong

convincing

firm

plausible

reasonable

serious

sturdy

substantial

UN SUBSTANTIAL Synonyms

adjective breakable, weak

decrepit

feeble

fragile

infirm

sickly

slender

slim

thin

vulnerable

brittle

dainty

epicene

flimsy

slight

tender

delicate

fishy

fracturable

frangible

insubstantial

puny

sad

shatterable

shattery

tenuous

unsound

unsubstantial

wimpy

wishy-washy

wispy

UN SUBSTANTIAL antonyms

fat

firm

healthy

hearty

solid

sound

strong

heavy

rough

thick

tough

unbreakable

UN SUBSTANTIAL Synonyms

adjective hopeless, pointless

fruitless

hollow

impractical

ineffective

ineffectual

insufficient

trivial

unproductive

unprofitable

unsuccessful

useless

vain

worthless

abortive

barren

bootless

delusive

empty

exhausted

forlorn

idle

impracticable

in vain

no dice

nugatory

on a treadmill

otiose

out the window

profitless

resultless

save one's breath

sterile

to no avail

to no effect

to no purpose

trifling

unavailing

unimportant

unneeded

unreal

unsatisfactory

unsubstantial

valueless

UN SUBSTANTIAL antonyms

effective

fruitful

helpful

productive

profitable

successful

useful

valuable

worthwhile

hopeful

UN SUBSTANTIAL Synonyms

adjective not making sense

absurd

false

groundless

implausible

inconsistent

incorrect

irrational

irrelevant

preposterous

senseless

unreasonable

unscientific

untenable

casuistic

cockeyed

fallacious

fatuous

faulty

hollow

inconclusive

incongruous

inconsequent

invalid

mad

meaningless

not following

nutty

off the wall

screwy

self-contradictory

sophistic

sophistical

specious

spurious

unconnected

unproved

unsound

unsubstantial

wacky

without basis

without foundation

UN SUBSTANTIAL antonyms

correct

logical

rational

reasonable

right

sensible

true

wise

meaningful

UN SUBSTANTIAL Synonyms

adjective fictitious, invented

abstract

fanciful

fantastic

fictional

hypothetical

imagined

theoretical

unreal

whimsical

ideal

visionary

apocryphal

apparitional

assumed

chimerical

deceptive

delusive

dreamed-up

dreamlike

dreamy

fabulous

fancied

figmental

fool's paradise

hallucinatory

illusive

illusory

imaginative

legendary

made-up

mythological

nonexistent

notional

phantasmal

phantasmic

quixotic

shadowy

spectral

supposed

supposititious

trumped-up

unsubstantial

UN SUBSTANTIAL antonyms

factual

ordinary

proven

real

practical

existing

genuine

physical

substantial

true

UN SUBSTANTIAL Synonyms

adjective not existing in physical form

incorporeal

nonmaterial

aerial

airy

apparitional

asomatous

bodiless

celestial

disbodied

discarnate

disembodied

dreamlike

dreamy

ethereal

ghostly

heavenly

impalpable

imponderable

incorporate

insensible

intangible

metaphysical

nonphysical

psychic

shadowy

spectral

spiritlike

spiritual

subjective

supernatural

unearthly

unembodied

unfleshly

unsubstantial

unworldly

wraithlike

UN SUBSTANTIAL antonyms

bodily

essential

important

material

meaningful

physical

real

relevant

solid

substantial

UN SUBSTANTIAL Synonyms

adjective not likely

dubious

farfetched

flimsy

impossible

improbable

inconceivable

incredible

unbelievable

unconvincing

unreasonable

doubtful

far-out

fishy

for the birds

full of holes

obscure

problematic

puzzling

reachy

suspect

thin

too much

unsubstantial

weak

won't hold water

won't wash

UN SUBSTANTIAL antonyms

believable

convincing

credible

likely

plausible

possible

realistic

reasonable

tenable