loneliness

noun4

1. •
   the sad feeling of having no one to talk to or spend time with

   • The loneliness resulting from the loss of loved ones, lack of purpose in life, and social discrimination is a real inner hell.
2. •
   The condition or state of being alone or having no companions.

   • Hitherto all things that have bin nam’d, were approv’d of God to be very good: lonelines is the first thing which Gods eye nam’d not good […] — 1645
3. •
   The state of being unfrequented or devoid of human activity (of a place or time).

   • […] as she sat at her bed-side, indulging melancholy reveries, which the loneliness of the hour assisted […] — 1794
4. •
   (no longer used) A desire to be alone; disposition to solitude.

   • […] I see The mystery of your loneliness, and find Your salt tears’ head: now to all sense ’tis gross You love my son […] — 1604