Wiktionary
carest
vb. (context archaic English) Second-person singular present simple form of '''care'''
Usage examples of "carest".
So while the wind is our helmsman, and we go circled by the quiet of this sea, I'll tell thee of myself, if thou carest to hear.
O Thou Good Omnipotent, who so carest for every one of us as if Thou caredst for him only, and so for all as if they were but one!
For "I am poor and needy," 931 Thou rich unto all that call upon Thee, 932 who free from care carest for us.
I will believe thou carest not for him--believe anything rather than see thee look so wretchedly miserable.