a. [ Compar. Lonesomer superl. Lonesomest. ] 1. Secluded from society; not frequented by human beings; solitary. [ 1913 Webster ]
Like one that on a lonesome road Doth walk in fear and dread. Coleridge. [ 1913 Webster ]
2. Conscious of, and somewhat depressed by, solitude; as, to feel lonesome. [ 1913 Webster ]
-- Lone"some*ly, adv. -- Lone"some*ness, n. [ 1913 Webster ]
n. 1. a disposition toward being alone. Syn. -- aloneness, loneliness, solitude. [ WordNet 1.5 ]
2. The condition of being alone; the feeling of sadness resulting from being alone. [ PJC ]