ebullient

adj

Etymology: Borrowing from Latin ēbulliēns, present participle of ēbulliō (“to boil”), from bulliō (“to bubble up”) (English boil). Compare bubbling, bubbly, and perky, which use a similar metaphor.

1. Enthusiastic; high-spirited.

   “The Spring will come with its ebullient blood, / With flush of roses and imperial eyes”

   “Marina's oddly ebullient words seemed to come to her slow as balloons”

2. Of a liquid: boiling and bubbling, or agitated as if boiling.
3. Causing heat.

   “It is allowed, that Senates and great Councils are often troubled with redundant, ebullient, and other peccant Humours, with many Diſeaſes of the Head and more of the Heart; with ſtrong Convulſions, with grievous Contractions of the Nerves and Sinews in both Hands, but eſpecially the Right; with Spleen, Flatus, Vertigos and Deliriums; with Scrophulous Tumors full of fœtid purulent Matter; with ſower frothy Ructations, with Canine Appetites and Crudeneſs of Digeſtion, beſides many others needleſs to mention.”