When all of your friends have left and you are feeling sad and alone, this is an example of a time when you would be described as lonesome.
A remote part of a tiny town with few people around would be an example of a place described as lonesome.
A lonesome pine.
A lonesome valley.
He ate the meal all by his lonesome.
Origin of lonesome
- From lone +"Ž -some, mid-17th century.