1. A task or venture undertaken: Climbing the mountain was a dangerous undertaking.
2. The action of beginning a task or venture: the undertaking of the expedition.
3. A guaranty, pledge, or promise: gave an undertaking that he would not disclose trade secrets.
4. The profession or duties of a funeral director.
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.