/ʌnˈwɪtnɪst/ – adjective
Definition: không có lời khai của nhân chứng, không được xác nhận, không có nhân chứng.
A more thorough explanation: “Unwitnessed” refers to an event or action that has not been observed or attested to by any witnesses.
Example: The will was deemed invalid because it was unwitnessed, as required by state law.