啃老 的英文怎麼說?

[1] a parasite at home[2] a parasite single
  a parasite couple[3] still live with one's parents[4] still live off (of) one's parents[5] people who depend on their parents financially[6] people who live off their parents

a parasite at home = 家裡的寄生蟲，也就是啃老的人

a parasite single = 類似寄生蟲的單身者，也就是啃老的單身者

a parasite couple = 類似寄生蟲的夫妻，也就是啃老的夫妻

a parasite at home 比 a parasite single/couple 更常用。

「啃老族」的白話可以說 still live with one's parents 或 still live off (of) one's parents，更普遍。

「啃老族」的別的白話翻譯如下:

people who live off their parents
people who depend on their parents financially