unsubstantiated
Not backed up
Unsubstantiated describes claims or allegations that lack supporting evidence or proof: unsubstantiated rumors, unsubstantiated accusations.
The word doesn't declare something false—only that it hasn't been verified or backed up.
The report contained several unsubstantiated claims about the company's finances.
Lacking factual support
- unfoundedWithout factual support
- unsupportedLacking backing or proof
- unwarrantedWithout adequate justification
- unjustifiedLacking adequate reason
unproven · unconfirmed · undocumented · spurious · tenuous · flimsy · indefensible · invalid
Unverified secondhand information
- gossipInformal talk spreading rumors
- allegationAssertion lacking proof
- accusationClaim someone did wrong
- claimStatement of ownership or truth
assertion · innuendo · whisper · scuttlebutt · canard · fabrication · tale · buzz
Of uncertain validity
- dubiousOf uncertain reliability
- suspectBelieve to be likely
- uncertainNot firmly known
- unreliableNot consistently performing
unconvincing · implausible · incredible · unbelievable · disputable · contestable · challengeable · debatable
Based on incomplete evidence
- hypotheticalAssumed but unproven
- theoreticalBased on hypothesis, untested
- presumptiveAssumed without full proof
- assumptiveBased on supposition
suppositional · notional · postulated · guesswork · surmise · inference · extrapolation · projected
groundless
Lacking factual support
- unfoundedWithout factual support
- unsupportedLacking backing or proof
- unwarrantedWithout adequate justification
unjustified · unproven · unconfirmed · undocumented · spurious · tenuous · flimsy · indefensible · invalid · evidenceless
hearsay
Unverified secondhand information
- gossipInformal talk spreading rumors
- allegationAssertion lacking proof
- accusationClaim someone did wrong
claim · assertion · innuendo · whisper · scuttlebutt · canard · fabrication · tale · buzz · talk
questionable
Of uncertain validity
unreliable · unconvincing · implausible · incredible · unbelievable · disputable · contestable · challengeable · debatable · controvertible
conjectural
Based on incomplete evidence
- hypotheticalAssumed but unproven
- theoreticalBased on hypothesis, untested
- presumptiveAssumed without full proof
assumptive · suppositional · notional · postulated · guesswork · surmise · inference · extrapolation · projected · speculative
- child welfarechild protection, child welfare, foster care, child services, foster home
- validityvalid, invalid, true, false, correct
- stabilitystable, steady, firmness, unstable, equilibrium
- statusespending, active, approved, inactive, completed
- denialsnot guilty, disclaimer, disavowal, rejection, refusal
unsubstantiatedsubstantiated
Confirmed with evidence
supported · proven · corroborated · documented · evidenced
unsubstantiatedcredible
Worthy of acceptance
convincing · compelling · persuasive · cogent · well-founded
substance, substantial, insubstantial, substantive, substantiate, substantially, substantiation, substantiated, substantiating