Pronunciation: ˌ e-f ə r- ' ves
Function: intransitive verb
Inflected Form: -vesced ; -vesc · ing
Etymology: Latin effervescere, from ex- + fervescere to begin to boil, inchoative of ferv ē re to boil ― more at BREW
Date: 1784
1 : to bubble, hiss, and foam as gas escapes
2 : to show liveliness or exhilaration
– ef · fer · ves · cence \ - ' ve-s ə n(t)s \ noun
– ef · fer · ves · cent \ -s ə nt \ adjective
– ef · fer · ves · cent · ly adverb