megalomania

1. A psychological state characterized by delusions of grandeur (synset 114415723)
   is a type of: mental disease, mental illness, psychopathy - any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention
   has: delusions of grandeur - a delusion (common in paranoia) that you are much greater and more powerful and influential than you really are

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