Solitary describes someone who feels happiest, most alive, or most restored when they are alone. People high in this trait may not simply tolerate solitude; they may actively prefer it. Being by themselves can feel freeing, calming, and more natural than being surrounded by other people, even when those people are not demanding anything from them.

At its best, this trait can show up as introspection, independence, self-possession, and the ability to be comfortable without constant approval or stimulation. At its extreme, it can become isolation, emotional distance, or avoiding connection even when support or closeness would be healthy.

A recognizable historical/literary example is Henry David Thoreau, especially as represented in Walden. He represents someone who treats solitude as a source of clarity, freedom, and aliveness, using time alone to think deeply and live closer to his own values.