v. i. | 1. | To be in a state of natural ebullition; to bubble and hiss, as fermenting liquors, or any fluid, when some part escapes in a gaseous form. |
2. | To exhibit, in lively natural expression, feelings that can not be repressed or concealed; |
Verb | 1. | effervesce - form bubbles; "The boiling soup was frothing"; "The river was foaming"; "Sparkling water" |