intr.v. col·lud·ed, col·lud·ing, col·ludes
To act together, often in secret, to achieve an illegal or improper purpose: "The managers and the union leaders regularly colluded to rob the plantations at the expense of the workers" (Daniel Wilkinson).
[Latin collūdere : com-, com- + lūdere, to play; see leid- 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.