Definition of "ebullient"

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

1908, James Ryder Randall, “Ashes”, in Maryland, my Maryland, and other poems, Baltimore, Md., New York: John Murphy Company, page 45

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

2001, Joyce Carol Oates, Middle Age: A Romance, paperback edition, Fourth Estate, page 233

Boris Johnson, the ebullient editor of the Spectator and Tory MP for Henley, is at the centre of a Scotland Yard inquiry over an allegedly racist article by the columnist Taki which provoked death threats against a leading black lawyer.

2003 February 28, Nick Hopkins, “Spectator and its Tory MP editor may face charges over Taki race rant”, in The Guardian‎

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.

1726 October 28, [Jonathan Swift], “A Further Account of the Academy. […]”, in Travels into Several Remote Nations of the World. […] [Gulliver’s Travels], volume II, London: […] Benj[amin] Motte, […], part III (A Voyage to Laputa, Balnibarbi, Glubbdubdribb, Luggnagg, and Japan), page 82