loneliness的形容词形式是？

　　He trudged home feeling lonely and let down.

　　他步履艰难地往家走，感到孤独而沮丧。

　　She felt lonely and hopeless.

　　她感到孤独绝望。

　　I don't get lonely now because I make the effort to see people.

　　我现在不觉得孤独了，因为我尝试着与人交往。

　　They often have a lonely and solitary life to lead.

　　他们常常过一种独居的孤独生活。

　　I would imagine she's quite lonely living on her own.

　　我猜想她一个人过肯定很孤独。