What is the meaning of lonely?

adjective

• Lacking companions or companionship.
  • usage: "he was alone when we met him"; "she is alone much of the time"; "the lone skier on the mountain"; "a lonely fisherman stood on a tuft of gravel"; "a lonely soul"; "a solitary traveler"
  • synonyms: alone, lone, solitary
• Marked by dejection from being alone.
  • usage: "felt sad and lonely"; "the loneliest night of the week"; "lonesome when her husband is away"; "spent a lonesome hour in the bar"
  • synonyms: lonesome
• Characterized by or preferring solitude.
  • usage: "a lone wolf"; "a lonely existence"; "a man of a solitary disposition"; "a solitary walk"
  • synonyms: lone, solitary
• Devoid of creatures.
  • usage: "a lonely crossroads"; "a solitary retreat"; "a trail leading to an unfrequented lake"
  • synonyms: solitary, unfrequented