C2 noun /ˌmɛɡələˈmeɪniə/
megalomania
对权力、财富或万能的妄想
Meaning
A condition characterized by delusional fantasies of power, wealth, or omnipotence.
Example
The dictator’s megalomania led him to believe he was invincible.
独裁者的极端自恋狂使他相信自己无敌。