C1 noun /ˈiːɡoʊˌɪzəm/
egoism
egoísmo
Meaning
An ethical theory that treats self-interest as the foundation of morality; also, excessive preoccupation with oneself.
Example
His decisions were often driven by egoism rather than concern for others.
Sus decisiones a menudo eran impulsadas por el egoísmo en lugar de por la preocupación por los demás.