baseless
Lacking any evidence
Baseless means without foundation or support—lacking any basis in fact or evidence.
A baseless accusation has nothing behind it; a baseless rumor started from nowhere.
The claims were entirely baseless.
The word carries strong dismissive force, implying not just weakness but complete absence of justification.
Without factual support
- groundlessLacking factual support
- unsubstantiatedWithout supporting evidence
- unsupportedLacking backing or proof
- unprovenNot yet established
unverified · unconfirmed · unjustified · unwarranted · uncorroborated · undocumented · unreliable · questionable
Invented, not real
- falseNot matching reality
- bogusCounterfeit or fraudulent
- untrueNot in accordance with fact
- erroneousContaining factual mistakes
fictitious · invented · made-up · concocted · manufactured · spurious · apocryphal · misleading
Assertion lacking proof
- claimStatement of ownership or truth
- chargeCost or accusation
- assertionConfident statement of fact
- accusationClaim someone did wrong
slander · libel · defamation · smear · calumny · innuendo · insinuation · attack
Guess from limited facts
- speculationUnproven theorizing or risky investment
- assumptionUnverified belief accepted as true
- presumptionBelief held without proof
- suppositionBelief without proof
guesswork · hypothesis · theory · inference · postulation · hunch · notion · surmise
unfounded
Without factual support
- groundlessLacking factual support
- unsubstantiatedWithout supporting evidence
- unsupportedLacking backing or proof
unproven · unverified · unconfirmed · unjustified · unwarranted · uncorroborated · undocumented · unreliable · questionable · doubtful
fabricated
Invented, not real
erroneous · fictitious · invented · made-up · concocted · manufactured · spurious · apocryphal · misleading · deceptive
allegation
Assertion lacking proof
accusation · slander · libel · defamation · smear · calumny · innuendo · insinuation · attack · rumor
conjecture
Guess from limited facts
- speculationUnproven theorizing or risky investment
- assumptionUnverified belief accepted as true
- presumptionBelief held without proof
supposition · guesswork · hypothesis · theory · inference · postulation · hunch · notion · surmise · belief
- skepticismdoubt, skeptic, doubts, debunker, doubtful
- authenticityauthentic, genuine, real, fake, counterfeit
- stabilitystable, steady, firmness, unstable, equilibrium
- unreal thingsillusion, delusion, fantasy, fiction, imaginary
- negative adjectivesawful, bad, cruel, dumb, evil
- off targetoff target, off-target, off the mark, wide of the mark, wide
baselesswell-founded
Having sound basis
substantiated · supported · proven · verified · confirmed
baselessjustified
Shown to be right
valid · reasonable · reasoned · justifiable · logical
- baseless claimsAssertions without factual support