Lonelyness is a feeling that we don't have as much connection as we'd like. Marissa defines loneliness in a way I hadn't really thought about before,. If you're alone and you're not craving social connection, then you're not lonely. But it's if you're sort of like, I want community, I want connection, and it's eluding me, I don't have it... That's an example of loneliness.