Definition of megalomaniac in English:

megalomaniac

Syllabification: meg·a·lo·ma·ni·ac
Pronunciation: /ˌmeɡələˈmānēˌak
 
/

noun

1A person who is obsessed with their own power.
More example sentences
  • Finally, of course, there is the natural desire of the megalomaniac to hang on to power until the last possible minute and not to take the slightest risk of losing it.
  • Volscenzi is the stereotypical bad guy; eccentric and power crazed, he is a paranoid megalomaniac who quite clearly desires, as is required of his kind, world domination.
  • No, Raines must be a megalomaniac, drunk on power.
1.1A person who suffers delusions of their own power or importance.
More example sentences
  • The psychiatrists diagnosed him as a megalomaniac with delusions of being a great poet, economist, linguist, historian, and political adviser to heads of state.
  • When the title is conferred on public figures, it is a well-known fact that they go mad; celebrities turn into monsters, and politicians into megalomaniacs, addled by delusions of eternity, going on, and on, and on.
  • It was preceded by months of attempted negotiations with a megalomaniac, power-hungry, delusional autocrat.

adjective

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Exhibiting megalomania.
More example sentences
  • The story is that of an intensely Irish megalomaniac father, who lives in the violent and paranoid world of his furniture store mogul past.
  • Amos’ escape idea was just as impossible as Dr. Anderson's megalomaniac thoughts of healing the world.
  • It all comes down to responsibility, and this power-crazed megalomaniac picture that you're painting is certainly not the only possible outcome, goal, or destination for people who don't believe sorcery should be used sparingly.

Derivatives

megalomaniacal

Pronunciation: /-məˈnīəkəl/
adjective
More example sentences
  • Others might view such people as demented or delusional or megalomaniacal.
  • Bates manages to infect almost the entire cast and crew with his neuroses and megalomaniacal attitude.
  • She is sensuous, grasping, self-absorbed, fierce, greedy, megalomaniacal, and utterly certain that she is entitled to have her ego, her power, and her way.

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