Skip to definition.
Get the FREE one-click dictionary software for Windows.


Noun: mental illness  'mentl 'ilnis
  1. Any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention
    - mental disease, psychopathy

Derived forms: mental illnesses

Type of: mental condition, mental state, psychological condition, psychological state

Antonym: mental health

Encyclopedia: Mental illness