lonesome
adjective US uk/ˈləʊn.səm/ us/ˈloʊn.səm/
孤独的，寂寞的
→ lonely
by/on your lonesome 独自地，单独地
alone
I was just sitting here all by my lonesome. 我只是一个人坐在这里。
While everyone else is at the festival, you'll be at home by your lonesome.
She spent her evenings wandering the city by her lonesome.
I think he came up with that theory all on his lonesome.
He was living on his lonesome in a dingy old caravan.