som·er·sault also sum·mer·sault (sŭmər-sôlt′)
1. An acrobatic stunt in which the body rolls forward or backward in a complete revolution with the knees bent and the feet coming over the head. Also called somerset; also called regionally tumbleset.
2. A complete reversal, as of sympathies or opinions.
intr.v. som·er·sault·ed, som·er·sault·ing, som·er·saults also sum·mer·sault·ed or sum·mer·sault·ing or sum·mer·saults
To execute a somersault.
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.