psychosis
noun
[ sʌɪˈkəʊsɪs ]
• a severe mental disorder in which thought and emotions are so impaired that contact is lost with external reality.
• "they were suffering from a psychosis"
Origin:
mid 19th century: from Greek psukhōsis ‘animation’, from psukhoō ‘I give life to’, from psukhē ‘soul, mind’.
