/ʌnˈsaʊndnəs ʌv maɪnd/ – Phrase
Definition: sự rối loạn tâm thần, sự mất trí.
A more thorough explanation: “Unsoundness of mind” refers to a legal term used to describe a mental condition in which an individual lacks the capacity to understand the nature and consequences of their actions, or to make rational decisions. This term is often used in the context of legal proceedings, such as in determining a person’s competency to stand trial or to make legal decisions.
Example: The defendant’s defense of unsoundness of mind was supported by expert testimony from a psychiatrist.