Definition of effervescent
1
: having the property of forming bubbles : marked by or producing effervescence
an effervescent beverage effervescent salts an effervescent tablet
2
: marked by or expressing an appealingly lively quality
an effervescent person/personality a song with an effervescent melody She was a marvel with the press: fresh, direct, effervescent.— Bruce Anderson Conditions being as they were at Brinkley Court … I hadn't expected the evening meal to be particularly effervescent. Nor was it. Silent. Sombre. The whole thing more than a bit like Christmas dinner on Devil's Island.— P. G. Wodehouse
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Merriam-Webster unabridged
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Time Traveler for effervescent
The first known use of effervescent was in 1833
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