/dɪˈsjuːɪtjuːd/ – adj
Definition: không còn dùng nữa, lỗi thời (luật pháp, tập đoàn).
A more thorough explanation: Desuetude is a legal term that refers to the discontinuance or abandonment of a law, right, or custom through non-use over a period of time.
Example: The law prohibiting the use of horse-drawn carriages has fallen into desuetude due to lack of enforcement.