schiz ‧ o ‧ phre ‧ ni ‧ a /ˌskɪtsəʊˈfriːniə, -sə- $ -soʊ-, -sə-/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Language: German ; Origin: schizophrenie , from Greek schizo- 'split' (from schizein ; ⇨ ↑ schism ) + phren 'mind' ]
a serious mental illness in which someone’s thoughts and feelings are not based on what is really happening around them