1. adjective An effervescent liquid is one that contains or releases bubbles of gas. ⇒ ...an effervescent mineral water. 2. graded adjective & adjective If you describe someone as effervescent, you mean that they are lively, entertaining, enthusiastic, and exciting. [approval] ⇒ ...an effervescent blonde actress. ⇒ America is the most intellectually, artistically and politically effervescent of nations. effervescence
uncountable noun ⇒ He wrote about Gillespie's effervescence, magnetism and commitment.
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