schizophrenia
noun
[ ˌskɪtsə(ʊ)ˈfriːnɪə ]
• a long-term mental disorder of a type involving a breakdown in the relation between thought, emotion, and behaviour, leading to faulty perception, inappropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation.
Origin:
early 20th century: modern Latin, from Greek skhizein ‘to split’ + phrēn ‘mind’.