bait and switch
1. A fraudulent advertising claim or sales offer for a product or service that is not available or not for sale at the stated price, made with the intention of luring customers who are then offered something else or forced to spend more money to get the same thing.
2. A deception based on a false claim or enticement that proves to be disappointing.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.