/ˌʌnˈnəʊtɪfaɪd/ – adjective
Definition: 1. không được thông báo, không khai báo;
2. không được báo cho biết.
A more thorough explanation: “Unnotified” refers to something that has not been formally or officially communicated or made known to the relevant parties or authorities.
Example: The landlord entered the tenant’s apartment unnotified, which violated the terms of the lease agreement.