unfounded Synonyms

baseless unwarranted wild idle groundless unexcused misguided wrong unsubstantiated unsustainable unwarrantable untruthful untrue unsound unreasoned unreasonable unknown uncalled-for superstitious unprovoked ungrounded uncorroborated unattested unproven unjustifiable untenable ill-founded unjustified unsupported unconfirmed unverified unproved unmeritorious unscientific spurious speculative foundationless flawed fictitious fictional faulty false fallacious fabricated erroneous deluded concocted chimerical causeless casuistic