1. Of, resembling, or serving as a monument.
2. Impressively large, sturdy, and enduring.
3. Of outstanding significance: Einstein's monumental contributions to physics.
4. Astounding: monumental cowardice; monumental talent.
mon′u·men·tali·ty (-mĕn-tălĭ-tē) n.
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.