C2 noun /ˌmɛɡələˈmeɪniə/
megalomania
fantasías delirantes de poder, riqueza o omnipotencia
Meaning
A condition characterized by delusional fantasies of power, wealth, or omnipotence.
Example
The dictator’s megalomania led him to believe he was invincible.
La megalomanía del dictador lo llevó a creer que era invencible.