Emily Dickinson Lexicon

EF-FER-VESCE, v.i. [efferves'; L. effervesco, from ferveo, to be hot, to rage. See Fervent.]

To be in natural commotion, like liquor when gently boiling; to bubble and hiss, as fermenting liquors, or any fluid, when some part escapes in an elastic form; to work, as new wine.