megalomania

Definition

A psychological condition characterized by delusions of grandeur, power, or importance; extreme narcissism.

हिन्दी महानता, शक्ति या महत्व के भ्रम से चिह्नित एक मनोवैज्ञानिक स्थिति; चरम आत्म-प्रेम।

Example

"His megalomania led him to believe he could rule the world."