自じ己こ主しゅ義ぎ

noun

egoism

A philosophical or psychological term for prioritizing one's own interests or self-centeredness. Often used in contrast with 利他主義 (altruism).

• 自じ己こ主しゅ義ぎの強つよい人ひとは、他た人にんの気き持もちを考かんがえないことが多おおい。

  People with strong egoism often don't consider others' feelings.

• 倫りん理り学がくの授じゅ業ぎょうで、自じ己こ主しゅ義ぎと利り他た主しゅ義ぎの違ちがいについて議ぎ論ろんした。

  In ethics class, we discussed the difference between egoism and altruism.