名詞 megalomania:

1. a psychological state characterized by delusions of grandeur

1. The dictator was suffering from megalomania.
   那獨裁者患有夸大狂。

meg.a.lo.ma.ni.a

n.（名詞）
A psychopathological condition in which delusional fantasies of wealth, power, or omnipotence predominate.
妄想自大狂：一種精神病的心理狀態(tài)，主要表現為對財富、權力或全能的妄想
An obsession with grandiose or extravagant things or actions.
妄目尊大：一種有浮夸或放肆的事情或行動的思想

【引伸】
meg.aloma.niac.
n.（名詞）
meg.alomani.acal