/nʌl/ – adjective
Definition: không có hiệu lực, không có giá trị, vô dụng, vụn vặt.
A more thorough explanation: In legal English, the term “null” refers to something that is invalid, void, or without legal effect. It indicates that a particular action, document, or agreement is considered to have no legal force or validity.
Example: The contract was declared NULL and void due to a breach of its terms.