1. A philosophical position holding that only one's own mind is certain to exist; the view that the self is the only thing that can be known to exist
The philosopher argued against solipsism by presenting evidence of external reality.
O filósofo argumentou contra o solipsismo apresentando evidências da realidade externa.
2. Excessive self-centeredness; the practice of being concerned only with oneself and one's own interests
His solipsism made it impossible for him to understand others' perspectives.
Seu solipsismo o impossibilitava de compreender as perspectivas dos outros.