v. seethed, seeth·ing, seethes
1. To churn and foam as if boiling.
a. To be in a state of turmoil or ferment: The nation seethed with rebellion.
b. To be violently excited or agitated: I seethed with anger over the insult. See Synonyms at boil1.
3. Archaic To boil.
To boil (something).
[Middle English sethen, to boil, from Old English sēothan.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.