An action calculated to frustrate an opponent or gain an advantage indirectly or deviously; a maneuver: "A typical ploy is to feign illness, procure medicine, then sell it on the black market" (Jill Smolowe).
[Perhaps from EMPLOY, employment (obsolete).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.