Wiktionary
dirtieth
vb. (en-archaic third-person singulardirty)
Usage examples of "dirtieth".
On the stairway the Jew came close, and, having examined me a little sharply with his velvety slits of eyes, as if to see that he was not making a mistake, said: "Ith fonny--we bring in eighty thix bills true, and one we throw out, and the one we throw out we know it to be true, and the dirtieth job of the whole lot.