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What is another word for
unsubstantiated
?
Need
synonyms for unsubstantiated
? Here's a list of
similar words
from our
thesaurus
that you can use instead.
Contexts
▼
▲
Not supported or proven by evidence
Not officially authorized or confirmed
Based on or calculated through theory rather than experience or practice
Subject to one or more conditions or requirements being met
Slanderous or libelous in nature
Supposed, or assumed to be
… more ▼
▲
Adjective
▲
Not supported or proven by evidence
unfounded
groundless
unsupported
questionable
baseless
unsound
dubious
spurious
unreasonable
weak
uncorroborated
foundationless
unproven
unreliable
unwarranted
doubtful
flimsy
unconfirmed
tenuous
unjustified
suspect
unverified
invalid
conjectural
speculative
dodgy
iffy
uncertain
nonvalid
unjustifiable
undependable
debatable
fishy
nebulous
disputable
unattested
arguable
dubitable
untrustworthy
unestablished
controversial
suspicious
suppositious
suppositive
assumed
presumed
indefinite
ill-founded
without foundation
without basis
not validated
open to question
open to doubt
not backed up by evidence
hard to believe
false
specious
shaky
untrue
erroneous
inaccurate
fallacious
unconvincing
untenable
illogical
ungrounded
flawed
misguided
incorrect
bogus
defective
wrong
fake
implausible
misleading
trumped-up
fallible
misinformed
deceptive
faulty
fabricated
untested
trumped up
vain
irrational
gratuitous
equivocal
unendorsed
imaginary
fictitious
inexact
mistaken
untruthful
problematic
factitious
sophistic
reasonless
unreasoned
full of holes
wide of the mark
indefensible
idle
vague
empty
uncalled-for
illusory
sketchy
bottomless
delusory
delusive
doubtable
inadequate
dicey
without justification
hollow
unauthenticated
chancy
rocky
disreputable
risky
nonrational
illegitimate
unreasoning
shady
deceitful
incongruous
deluding
deceiving
unsustainable
problematical
distorted
inconsequent
inconsequential
unreal
sophistical
queer
off
unclear
unsubstantial
flakey
US
pseudo
unstable
flaky
UK
sham
phoney
UK
phony
US
mad
off-target
off beam
not genuine
insecure
nonsupported
unproved
unprovoked
inexcusable
unpardonable
unwarrantable
unforgivable
unsafe
unauthorized
US
imprecise
without substantiation
without merit
unsupervised
hearsay
unofficial
chimerical
controvertible
inexpiable
beguiling
uncalled for
not backed up
causeless
insubstantial
made up
contentious
borderline
without cause
unauthorised
UK
without reason
fraudulent
without explanation
moot
issuable
insupportable
negligible
fragile
way off beam
way off
mythical
legendary
falsified
preposterous
uncanonical
in doubt
negotiable
unspecific
insignificant
hazy
unbacked
casuistic
improbable
unpersuasive
unbelievable
open to debate
open to suspicion
subject to debate
invented
ungenuine
counterfeit
fictional
unsure
indecisive
indeterminate
unsettled
nonsensical
poor
unsatisfactory
unlikely
far-fetched
absurd
contradictory
incredible
ludicrous
inconclusive
feeble
farfetched
lame
apocryphal
not reliable
not dependable
off-base
made-up
out
unsupportable
inconceivable
obscure
impossible
irreconcilable
puzzling
senseless
fantastic
dishonest
pathetic
airy
fatuous
nutty
thin
wacky
slight
reachy
unimpressive
counterfactual
truthless
artificial
off the wall
won't hold water
won't wash
self-contradictory
misrepresentative
illegal
off target
way out
wrongly inferred
not working
ridiculous
unthinkable
unimaginable
fanciful
shallow
silly
stupid
paltry
trifling
incredulous
uncompelling
incoherent
daft
idiotic
foolish
inane
fantastical
hard to swallow
half-baked
superficial
insufficient
unconceivable
difficult to believe
remote
crazy
frivolous
brainless
frail
insane
imperfect
not likely
ineffectual
kooky
imbecilic
harebrained
inconsistent
beyond belief
unscientific
scarcely credible
slim
unwise
full of it
ill-considered
ill-defined
wishful
witless
weakly
unrealistic
transparent
injudicious
not expected
hundred-to-one
vapid
loony
unintelligent
asinine
flat
indistinct
moronic
cockamamie
outside
confused
distant
faint
too much
cock-and-bull
for the birds
mindless
deficient
meager
US
inept
trivial
laughable
tame
thoughtless
barmy
meagre
UK
arbitrary
unacceptable
disjointed
meaningless
extraordinary
amiss
dotty
light
staggering
labored
US
laboured
UK
impaired
ambiguous
strained
strange
cockeyed
screwy
forced
incomprehensible
rare
faltering
imprudent
unimagined
zany
incogitable
minute
lunatic
beyond the bounds of possibility
daffy
indiscreet
incautious
dippy
unintelligible
mind-boggling
mind-blowing
not convincing
far out
dim
doltish
perplexing
hesitant
jerky
tomfool
shadowy
simple
softheaded
feebleminded
nerdy
unearthly
short-sighted
ill-advised
half-witted
unarguable
undefendable
refutable
inadmissible
threadbare
feeble-minded
substandard
all wet
contrived
inauthentic
unsuccessful
weak-kneed
ailing
contemptible
assailable
ponderous
slender
loopy
cockamamy
unthinking
in poor condition
wild
tall
wrongly deduced
lacking substance
half-hearted
unplausible
unapt
astonishing
amazing
outlandish
enigmatic
blurred
reaching
infeasible
hard to take
eye-popping
scatterbrained
lamebrained
past belief
jaw-dropping
slim and none
outside chance
unheard of
bleak
impracticable
demented
exiguous
cock and bull
freaky
aberrant
distraught
raving
counterintuitive
disconnected
delirious
off-the-wall
woolly
UK
bleary
foggy
cloudy
casual
minor
petty
unimportant
small
shoestring
inconsiderable
perverse
wooly
US
fuzzy
irrelevant
unconnected
unknowable
insupposable
imcomprehensible
not following
not making sense
hesitating
halting
unheard-of
out of the question
stuttering
stammering
inarticulate
pointless
extremely implausible
extremely unlikely
extremely doubtful
beyond reason
won't fly
extremely difficult to believe
not in the least likely
risible
not to be thought of
puerile
bad
goofy
insincere
dumb
vacuous
sappy
hypocritical
damfool
gormless
futile
glaikit
cynical
garbled
stumbling
cretinous
childish
feigned
pretended
infantile
divvy
inexplicit
dof
pretend
dissimulating
dissembling
unpredictable
unforeseeable
indistinguishable
unresolved
incalculable
immature
purposeless
cryptic
arcane
abstruse
undetermined
undefined
mysterious
mumbled
muttered
broken
poorly spoken
treacherous
worthless
undecided
unknown
confusing
muffled
debased
rank
unretentive
unfit
adulterated
awry
lemon
sick
malformed
injured
tainted
blamable
broken-down
warped
marred
botched
blemished
incomplete
cracked
leaky
maimed
vacant
insipid
crass
innocuous
double-dealing
devoid of validity
two-faced
hollow-hearted
faithless
empty-headed
wishy-washy
devoid of intelligence
intangible
indiscernible
wavering
irresolute
equivocating
elusive
vacillating
up in the air
in the balance
below par
more ❯
“This has led to all sorts of unfair and
unsubstantiated
accusations being leveled against me.”
Adjective
▲
Not officially authorized or confirmed
unofficial
unconfirmed
uncorroborated
unauthorised
UK
unauthorized
US
undocumented
private
unauthenticated
unratified
unsanctioned
personal
uncertified
off-the-record
unendorsed
off the record
hearsay
unsupported
unsupervised
invalid
unverified
unproven
Adjective
▲
Based on or calculated through theory rather than experience or practice
theoretical
academic
hypothetical
conjectural
speculative
suppositional
notional
assumed
postulatory
presumed
unproven
academical
conjectured
ideational
imagined
suppositious
untested
nominal
suppositive
analytical
codified
contingent
formalistic
formularized
general
idealised
UK
idealized
US
ideological
imaginary
imaginative
impractical
instanced
intellectual
logical
pedantic
philosophical
postulated
problematical
quixotic
tentative
theoretic
transcendent
transcendental
unearthly
unproved
vague
in theory
on paper
as a premise
in the abstract
abstract
ideal
putative
metaphysical
supposed
unfounded
groundless
based on guesswork
hypothetic
pure
conceptual
unreal
fanciful
experimental
hairy
dangerous
projected
conceptive
illusory
fancied
imagal
visionary
inferred
presupposed
suspected
surmised
postulational
uncertain
guessing
unresolved
figured
surmising
reputed
doubtful
suspect
guesstimated
on a hunch
on a long shot
alleged
apparent
supposititious
purported
presumptive
likely
asserted
inferential
seeming
ostensible
ostensive
evident
rumoured
UK
rumored
US
prima facie
accepted
held
thought
unconfirmed
unrealistic
reported
believed
indefinite
said
claimed
understood
intelle
divinatory
paradigmatic
recognized
US
acknowledged
considered
regarded
non-practical
professed
recondite
deemed
estimated
unpractical
nonconcrete
imputed
reputative
non-technical
blue-sky
intangible
immaterial
unpragmatic
specious
irrelevant
accounted
fundamental
basic
higher
commonly believed
commonly regarded
soi-disant
recognised
UK
declared
useless
reckoned
judged
invented
made-up
fictional
fabled
gossiped
suppository
ivory-tower
indeterminate
casual
contestable
disputable
equivocal
assumptive
stochastic
concocted
questionable
conditional
conjecturable
debatable
refutable
provisory
proposed
guessed
pretending
problematic
ivory-towered
ivory-towerish
made up
expected
hypothesized
US
granted
anticipated
implicit
given
connoted
tacit
hypothesised
UK
counted on
taken as known
taken for granted
more ❯
Adjective
▲
Subject to one or more conditions or requirements being met
tentative
indefinite
unconfirmed
trial
unsettled
experimental
preliminary
speculative
test
conjectural
exploratory
pilot
TBC
conditional
dependent
unproven
untried
pencilled in
contingent
makeshift
probationary
rough
subject to
undecided
subject to confirmation
contingent on
contingent upon
not final
not settled
on trial
to be confirmed
open for consideration
open to consideration
subject to change
untested
new
unattempted
unproved
prototype
unestablished
novel
unessayed
inexperienced
fledgling
unfledged
in the experimental stage
immature
green
fresh
unexpert
callow
provisional
developmental
sample
probing
investigative
fact-finding
explorative
hingeing on
based on
depending on
resting on
hanging on
controlled by
determined by
model
practice
approximate
initial
testing
mock
pretend
simulated
corroboration
confirmation
elimination
empirical
hypothetical
investigational
based
searching
preparatory
under review
beginning
unconcluded
depending
analytic
counting
relying
examining
swayed by
resultant from
susceptible to
regulated by
related to
relying on
liable to
under control of
bound by
relative to
incidental to
accessory to
influenced by
conditional on
first stage
dependent on
on the drawing board
tied to
bound up with
more ❯
Adjective
▲
Slanderous or libelous in nature
scurrilous
defamatory
slanderous
aspersory
libellous
UK
libelous
US
maligning
pejorative
aspersive
baseless
calumniatory
calumnious
false
injurious
opprobrious
uncorroborated
unfounded
unwarranted
damaging
insupportable
unsupported
untrue
lying
malicious
misrepresentative
scandalous
unjustifiable
unjustified
ill-founded
mud-slinging
vilifying
disparaging
derogatory
denigratory
vituperative
insulting
invidious
backbiting
contumelious
traducing
debasing
abusive
slurring
smearing
muckraking
sarcastic
poisonous
dirty
vicious
more ❯
Adjective
▲
Supposed, or assumed to be
purported
supposed
alleged
ostensible
claimed
professed
maintained
unsupported
assumed
apparent
presumed
reputed
putative
rumoured
UK
rumored
US
seeming
ostensive
evident
declared
thought
prima facie
reported
believed
said
hypothetical
suspected
pretended
held
specious
avowed
so-called
conjectural
suspect
suspicious
asserted
outward
designated
understood
accepted
surface
superficial
presupposed
feigned
illusory
likely
semblant
suppositional
supposititious
stated
described
averred
perceived
implicated
incriminated
illusive
plausible
theoretical
involved
suppositious
under suspicion
appearing
soi-disant
considered
regarded
quasi-
possible
exterior
invented
made-up
fictional
imaginary
deemed
estimated
recognized
US
presumptive
acknowledged
probable
to all appearances
imputed
reputative
accounted
reckoned
judged
commonly believed
commonly regarded
recognised
UK
fabled
gossiped
suppositive
suppository
conjectured
expected
unproven
affirmed
doubtful
surmised
dubious
unproved
questionable
hypothesized
US
granted
anticipated
implicit
inferred
given
connoted
postulated
tacit
hypothesised
UK
taken as known
counted on
taken for granted
exhibited
manifest
colorable
notable
demonstrative
quasi
external
obvious
unambiguous
clear
clear-cut
credible
cosmetic
deictic
posturing
phoney
UK
phony
US
demonstrating
outside
outer
perceptible
noticeable
observable
visible
outermost
extrinsic
discernible
out
open
over
from within
toward the edge
to the eye
on the surface
more ❯
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unsubstantiated
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Nearby Words
unsubstantiated information
unsubstantiatedly
unsubtle
unsubtly
unsuccess
unsuccesses
unsubstantially
unsubstantiality
unsubstantialities
unsubstantial
unsubscribing
unsubscribes
15-letter Words Starting With
u
un
uns
unsu
unsub
unsubs
unsubst
unsubsta
unsubstan
unsubstant
unsubstanti
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