un‧cor‧rob‧o‧rat‧ed /ˌʌnkəˈrɒbəreɪtəd, ˌʌnkəˈrɒbəreɪtɪd $ -ˈrɑː-/
adjective an uncorroborated claim or statement is one which is not supported by any proof:
He was convicted on the uncorroborated evidence of the alleged victim. [TahlilGaran] Dictionary of Contemporary English ▲