tr.v. con·tra·vened, con·tra·ven·ing, con·tra·venes
1. To act or be in violation of (a law, directive, or principle, for example); violate: a sailor who contravened a direct order; a regulation that contravened the new tax policy.
2. To be inconsistent with; be contrary to: "Such a marriage ... contravenes much of what we know about marriages in this period" (Carol Meyers).
[French contrevenir, from Medieval Latin contrāvenīre, to transgress, from Late Latin, to oppose : Latin contrā-, contra- + Latin venīre, to come; see gwā- 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.