"Loneliness is when we are surrounded by people and feel misunderstood by others." By this definition a prisoner in solitary confinement is not lonely. That see

"Loneliness is when we are surrounded by people and feel misunderstood by others." By this definition a prisoner in solitary confinement is not lonely. That seems problematic. The overall argument might still be useful, but I wouldn't call these things definitions, just implications (IF you are surrounded by people and feel misunderstood by others THEN you feel lonely).