1. megalomaniac - Noun
2. megalomaniac - Adjective
a pathological egotist
Source: WordNetFoto: Casey Neistat told viewers that he was speaking up because Donald Trump was a „megalomaniac driven by nothing but ego.“ Source: Internet
Others saw Solano López as a paranoid megalomaniac, a man who wanted to be the "Napoleon of South America", willing to reduce his country to ruin and his countrymen to beggars in his vain quest for glory. Source: Internet
However, in the political realm, historians debate whether Napoleon was "an enlightened despot who laid the foundations of modern Europe or, instead, a megalomaniac who wrought greater misery than any man before the coming of Hitler." Source: Internet
In a fearless move, Pogo's creator Walt Kelly took on Joseph McCarthy in the 1950s, caricaturing him as a bobcat named Simple J. Malarkey, a megalomaniac who was bent on taking over the characters' birdwatching club and rooting out all undesirables. Source: Internet
Noam Chomsky is right in calling him a "sociopathic megalomaniac" whose only allegiance is to himself, "great wealth and corporate power." Source: Internet
At the start of the game, the company’s highest executive is President Shinra, a megalomaniac who regularly patronizes a slum’s brothel to indulge in fetishistic role-play while dressed up like a king. Source: Internet