I. ˈlōn(t)-səm adjective
Date: 1647
1.
a. : sad or dejected as a result of lack of companionship or separation from others
don't be lonesome while we are gone
b. : causing a feeling of loneliness
the empty house seemed so lonesome
2.
a. : remote , unfrequented
look down, look down that lonesome road — Gene Austin
b. : lone
Synonyms: see alone
• lone·some·ly adverb
• lone·some·ness noun
II. noun
Date: 1899
: self
sat all by his lonesome