err (ĕr, ûr)
intr.v. erred, err·ing, errs
1. To make an error or misjudgment: I erred in turning onto the dead-end street.
2. To commit an act that is wrong; do wrong.
3. Archaic To stray.
[Middle English erren, from Old French errer, from Latin errāre, to wander; see ers- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.