What is another word for insane person?
Pronunciation: [ɪnsˈe͡ɪn pˈɜːsən] (IPA) 
The term "insane person" refers to an individual who suffers from a severe mental disorder that manifests in unpredictable or irrational behavior. While this term is often used colloquially, it can also perpetuate stigma surrounding mental health. In order to use more respectful language, synonyms for "insane person" might include phrases such as "person living with mental illness" or simply "person with a psychiatric diagnosis." Other alternatives might include "mentally distressed," "psychologically-challenged," or "emotionally unstable." By using inclusive language to refer to individuals with mental health challenges, we can help reduce the shame and discrimination often experienced by those who struggle with mental illness.
