unsupported Synonyms

without substantiation nonsupported unconfirmed unverified ungrounded unprovoked misguided unassisted weak unwarranted unwarrantable unsound unvalidated unjustified ill-founded without merit without cause unsubstantiated unendorsed uncorroborated unauthenticated unattested unaided unproven unjustifiable untenable unseconded unreliable unreasoned foundationless flimsy false fallacious empty dubious doubtful bottomless baseless baroscopic backless groundless idle illogical unreasonable unfounded speculative specious single-handed shaky questionable