/ɪnˈkɑmpɪtənt ˈwɪtnəs/ – Phrase
Definition: 1. người không đủ khả năng làm nhân chứng;
2. chứng cứ không thể chấp nhận được.
A more thorough explanation: An incompetent witness refers to a person who is unable to provide testimony in a legal proceeding due to a lack of mental capacity, understanding, or ability to communicate effectively. This may be due to factors such as age, mental illness, intellectual disability, or other impairments that prevent the witness from being able to accurately perceive and recount events or information.
Example: The judge declared the witness to be incompetent to testify due to their lack of mental capacity to understand and accurately recall the events in question.