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unsubstantiated

1 ENTRIES FOUND:
unsubstantiated /ˌʌnsəbˈstænʃiˌeɪtəd/ adjective
unsubstantiated
/ˌʌnsəbˈstænʃiˌeɪtəd/
adjective
Britannica Dictionary definition of UNSUBSTANTIATED
formal
: not proven to be true