Webster's Revised Unabridged Dictionary · 1913

Err

Err (ẽr) , intransitive verb

[French errer, Latin errare; akin to German irren, Old High German irran, transitive verb, irrōn, v. i., Old Saxon irrien, Swedish irra, Danish irre, Goth, aírzjan to lead astray, airzise astray.]

1.
To wander; to roam; to stray. [Archaic]
Why wilt thou err from me? — Keble
What seemeth to you, if there were to a man an hundred sheep and one of them hath erred. — Wyclif (Matt. xviii. 12)
2.
To deviate from the true course; to miss the thing aimed at.
My jealous aim might err. — Shakespeare
3.
To miss intellectual truth; to fall into error; to mistake in judgment or opinion; to be mistaken.
The man may err in his judgment of circumstances. — Tillotson
4.
To deviate morally from the right way; to go astray, in a figurative sense; to do wrong; to sin.
Do they not err that devise evil? — Bible (KJV) - Proverb xiv. 22
5.
To offend, as by erring.