egoism
🇺🇸
/ˈiːɡəʊɪzəm/
🇬🇧
/ˈiːɡəʊɪzəm/
thinking you are better or more important than others
His egoism made him care only about himself and not others.
彼の自己中心的な態度は、自分だけを気にかけ、他人を気にかけなかった。