Synonyms for Without substantiation

Synonyms starting with letter U

• unconfirmed
• unsupported
• ungrounded
• uncorroborated
• untrue
• unfounded
• unsubstantiated
• unjustified
• unjustifiable
• untenable
• unwarranted
• unverified
• unproven
• unofficial
• unendorsed
• unsupervised
• unenforceable
• unfruitful
• unratified
• unsanctioned
• unsuccessful
• useless
• uncertain