EFFERVESCE, verb intransitive efferves'. [Latin 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.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI