This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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verb-intransitive. To emit small bubbles of gas, as a carbonated or fermenting liquid.

verb-intransitive. To escape from a liquid as bubbles; bubble up.

verb-intransitive. To show high spirits or animation.

v. to emit small bubbles of dissolved gas; to froth or fizz

v. to escape from solution in a liquid in the form of bubbles

v. to show high spirits

verb-intransitive. 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.

verb-intransitive. To exhibit, in lively natural expression, feelings that can not be repressed or concealed.

To be in a state of natural ebullition, like liquor when gently boiling; bubble and hiss, as fermenting liquors or any fluid when some part escapes in a gaseous form; work, as new wine.

Figuratively, to show signs of excitement; exhibit feelings which cannot be suppressed: as, to effervesce with joy.

v. become bubbly or frothy or foaming

"And yet, as every TV executive knows to his everlasting regret, it's not so simple as just sending out a junior casting suit for a little browsing and sluicing through a cattle call, to round up a herd of people who, when confronted by a lens, began to effervesce to an extraordinary extent."

effervesced    effervesces    effervescing   

bubble   

effervescing draught   

effervescence    effervescent   

lather    seethe   

effervesced    effervescing   

bubble