/nɒn ˈjuːzə(r)/ – adjective
Definition: không sử dụng (quyền), không thi hành chức trách nhiệm vụ.
A more thorough explanation: Non-user refers to the failure to use or exercise a right or property for a period of time, which may result in the loss or limitation of that right or property under certain legal principles, such as adverse possession or abandonment.
Example: The non-user of the trademark allowed it to lapse into abandonment.