The vegetables had been boiled to a mush, and were quite uneatable.

菜煮烂了, 都没法吃了。

The food at the orphan house was so bad that it's uneatable.; The food at the orphan house was so bad that it's hardly eatable.

孤儿物很差,简直不能吃。

This food is positively uneatable.

这物确实不能吃。

The English country gentleman gallop after a fox- the unspeakable in full pursuit of the uneatable.

策马奔驰之后英国乡绅--拼命追求不可吃东西一类不可以言语东西。