loneliness

/ˈloʊnlinəs/
noun
  1. A sad feeling of being alone or without friends or company.
    • Loneliness can affect people even when they are surrounded by others.
    • The old man's loneliness was eased by his daily visits to the library.
    • After moving to a new city, she struggled with loneliness for months.
  2. The state of being solitary or isolated from others.
    • The loneliness of the desert landscape was both beautiful and frightening.
    • The cabin's loneliness offered peace but also a constant reminder of his isolation.
    • He chose a life of loneliness as a lighthouse keeper on a remote island.