Fascinatingly, there isn't one—at least, I can't think of one, and I can't find one in several online thesaurii. “Togetherness” is the opposite of “loneliness,” and “together” is the opposite of “alone,” but there is no “togetherly,” or any synonym I can think of. So if one finds an end to loneliness, what is the name for the feeling? Loved, loving, togetherness, …? There is no opposite of angry, nor of fearful, either. Nor of lusty. The English grammar of words for emotions appears to have no structure. How utterly odd. Can anyone reading this think of counter-examples?