stu·pe·fy (stpə-fī′, sty-)
tr.v. stu·pe·fied, stu·pe·fy·ing, stu·pe·fies
1. To cause (someone) to be unable to think clearly or be sensitive to the surroundings; daze: was stupefied by the toxic gas.
2. To amaze; astonish: a race that stupefied the fans.
[Middle English stupefien, from Old French stupefier, from Latin stupefacere : stupēre, to be stunned + facere, to make; see FACT.]
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.