/tə bɪˈkʌm ɪnˈseɪn/ – Phrase
Definition: 1. mắc bệnh tâm thần;
2. mất năng lực chịu trách nhiệm.
A more thorough explanation: To become insane refers to the process by which an individual experiences a mental disorder that impairs their ability to understand reality, think rationally, or behave in a socially acceptable manner, as determined by a court or medical professional.
Example: The defendant claimed that the constant harassment from his neighbors caused him to become insane and therefore not responsible for his actions.