Megalomaniac
(noun)
A person who has an obsessive desire for power, status, or wealth, often to the point of delusional thinking.
Origin:
From the greek μεγαλομανία (megalomania), from μέγας (megas) meaning "great" and μανία (mania) meaning "madness" or "frenzy".
Examples:
- The dictator's megalomania led him to believe that he was above the law.
- He was a megalomaniac who wanted to control everything.
- The CEO's megalomania was causing tension within the company.
- His megalomania led him to believe he could control the weather.
- The megalomaniac's ambition knew no bounds.