effervescence

American  

[ef-er-ves-uhns] / ˌɛf ərˈvɛs əns /

noun

plural

effervescences

1. the quality or fact of being effervescent; bubbliness.

2. an instance of being effervescent; something effervescent.

---

effervescence Scientific  

/ ĕf′ər-vĕs′əns /

1. The bubbling of a solution due to the escape of gas. The gas may form by a chemical reaction, as in a fermenting liquid, or by coming out of solution after having been under pressure, as in a carbonated drink.

---

Explanation

Soda has effervescence. How can you tell? Just look for bubbles. Things that bubble have effervescence. Effervescence derives from French. To pronounce it correctly, say "eff er VES ence." Originally it meant "the action of boiling up," but it has also come to mean "lively," such as the effervescence of someone who has energy and charisma. It is the opposite of flatness, in which things seem slow, dead, or just "off," like all the air — or energy — is gone.

Example Sentences

And Yoo Geun-Taek, exhibited by Gallery Hyundai, is the embodiment of effervescence.

From The Wall Street Journal • Feb. 27, 2026

Quan's natural effervescence, however, gave his characters an energy and spirit that defied the expectation that these geeks had to be timid or socially awkward.

From Salon • Feb. 7, 2025

That effervescence that they had at the start of the game has dropped.

From BBC • Apr. 19, 2024

It was the effervescence Montes displayed once he reached third base safely.

From Seattle Times • Mar. 14, 2024

At the sight of him, my effervescence fades.

From "How It Went Down" by Kekla Magoon