The supine in u signifies passively, and follows nouns adjective, as

Quod olfactu f[oe]dum est, idem est et esu turpe:

That which is foul to be smelled, is also nasty to be eaten.

Except venison, onions, and cheese.

The Comic Latin Grammar: A new and facetious introduction to the Latin tongue · 第 86 / 147 题