Wiktionary
amendest
vb. (context archaic English) (en-archaic second-person singular of: amend)
Usage examples of "amendest".
I have dreamed this or no, mark this day, for unless thou amendest thy life, before this year has passed thou shalt hear such news of those thou lovest best, and shalt win such sorrow from them, that it shall not fail thee till thy dying day!