Wiktionary
understandeth
vb. (context archaic English) (en-third-person singular of: understand)
Usage examples of "understandeth".
And eke men say, that that judge is wise, that soon understandeth a matter, and judgeth by leisure.
Come, I shall accompany you a way and we will talk out of hearing of this Nasrany who, perchance, understandeth more of our tongue than he would have us guess.