Wiktionary
changest
vb. (en-archaic second-person singular of: change)
Usage examples of "changest".
Even if thou shouldst feel that the kindly influence of her whom thou art soon to behold should loosen the bonds of thy tongue, presently imprisoned, as the good Soldan expresses it, within the ivory walls of its castle, beware how thou changest thy taciturn character, or speakest a word in her presence, even if thy powers of utterance were to be miraculously restored.
Importuning her in strangest, Sweetest tones to buy their fruits:- O be careful that thou changest, On returning home, thy boots.