One who is alone, lacking or avoiding the company of others.

Unhappy due to being alone; lonely.

(informal) Oneself alone.

A feeling of depression resulting from being alone or from having no companions. / The condition or state of being alone or having no companions.

In a lonesome manner, in a way missing companionship.

The state of being lonesome.

plural of loneliness

plural of loner

plural of lonesome

plural of lonelyheart