megalomania

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megalomania

a mental illness characterized by delusions of grandeur, power, wealth, etc.

megalomania

[‚meg·ə·lō′mā·nē·ə]
(psychology)
The delusion of greatness and omnipotence characterizing certain psychotic reactions.
References in periodicals archive ?
xXx (12a) *** All action roller coaster with Vin Diesel in a punk-like James Bond role saving the world against the usual mad meglomaniac.
And not just the one-eyed meglomaniacs who sit stroking cats expecting Mr Bond's arrival they also bug 'good guys' like Kofi Annan, apparently.