a person who has no place in their society or in a particular group, because the society or group refuses to accept them

She has spent her life trying to help the homeless and other social outcasts. 她毕生致力于帮助无家可归的人和其他的社会弃儿。

She was a political outcast after the Party expelled her in 1982. 她在1982年被开除党籍后成了一个政治流浪者。