co-opt (kō-ŏpt, kōŏpt′)
tr.v. co-opt·ed, co-opt·ing, co-opts
1. To elect as a fellow member of a group.
2. To appoint summarily.
3. To take or assume for one's own use; appropriate: co-opted the criticism by embracing it.
4. To neutralize or win over (an independent minority, for example) through assimilation into an established group or culture: co-opt rebels by giving them positions of authority.
[Latin cooptāre : co-, co- + optāre, to choose.]
co-opta·tive (-tə-tĭv) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.