froth (frôth, frŏth)
1. A mass of bubbles in or on a liquid; foam.
2. Salivary foam released as a result of disease or exhaustion.
3. Something unsubstantial or trivial: "The frivolous side of the Sixties—fashion, pop culture, sex—should not be dismissed as mere froth and show" (Tony Judt).
4. High prices unwarranted by economic fundamentals: a housing market with a lot of froth.
5. A fit of anger or vexation: was in a froth over the long delay.
v. (also frôth, frŏth) frothed, froth·ing, froths
1. To cover with foam.
2. To cause to foam.
To exude or expel foam: a dog frothing at the mouth.
[Middle English, from Old Norse frodha.]
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.