e·bul·lient (ĭ-blyənt, ĭ-bŭl-)
1. Zestfully enthusiastic.
2. Boiling or seeming to boil; bubbling.
[Latin ēbulliēns, ēbullient-, present participle of ēbullīre, to bubble up : ē-, ex-, up, out; see EX- + bullīre, to bubble, boil.]
Usage Note: Traditionally, ebullient is pronounced (ĭ-bŭlyənt), with a short u in the second syllable, as in gull. This is apparently still the preferred pronunciation in British English. In American English, the pronunciation (ĭ-blyənt), with the second syllable like bull, is now equally common.
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.