/ˌʌndɪˈklɛəd/ – adjective
Definition: 1. không công bố;
2. không khai báo hải quan.
A more thorough explanation: “Undeclared” refers to something that has not been formally announced, disclosed, or made known. It typically implies that a particular action, status, or intention has not been officially acknowledged or declared.
Example: The defendant was found guilty of possessing undeclared firearms in violation of federal law.