tr.v. a·vert·ed, a·vert·ing, a·verts
1. To turn away: avert one's eyes.
2. To keep from happening; prevent: averted an accident by turning sharply. See Synonyms at prevent.
[Middle English averten, from Old French avertir, from Latin āvertere : ā-, ab-, away from; see AB-1 + vertere, to turn; see wer-2 in the Appendix of Indo-European roots.]
a·verti·ble, a·verta·ble adj.
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.