unsubstantiated russian

• беспо́чвенный

  groundles unfounded or unsubstantiated adj

• голосло́вный

  unsubstantiated, unfounded

• бездоказа́тельный

  unsubstantiated, unfounded

• голосло́вность

  prooflessness, unsubstantiated nature

• бездоказа́тельно

  unsubstantiated, without proof, unproven

• вы́сосанный

  sucked out, sucked up

  far-fetched, fabricated, made up, unsubstantiated