Nota 1

«megalomania \meg-uh-lo-MAY-nee-ah; -nyuh\, noun:
1. A mania for grandiose or extravagant things or actions.
2. A mental disorder characterized by delusions of grandeur.»

tirado DAQUI

«"Megalomania" is made from two words which come to us from Greek. "Mania" is a form of mental illness where the person becomes very excited or obsessed by an idea. "Megalo" means "large" or "great," so put the two words together and you have "megalomania," a kind of mental illness where the person is convinced that he or she is much "greater" than he or she actually is. "Megalomania" was first used in English in the late 1800s, but "megalomaniacs" have been around as long as there have been other people for them to boss around.»

tirado DAQUI

Nunca tinha olhado para a palavra com "olhos de gente", é mesmo o nome de uma doença mental... duh!
Para quem não sabe é também o nome de um grande clássico dos jogos de computadores:
Megalomania -> IMAGEM