leavening

American  

[lev-uh-ning] / ˈlɛv ə nɪŋ /

noun

1. Also called leavening agent.  a substance used to produce fermentation in dough or batter; leaven.

2. the act or process of causing to ferment by leaven.

3. leaven.

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Etymology

Origin of leavening

First recorded in 1600–10; leaven + -ing ¹

Example Sentences

The film’s comedy won’t appeal to all tastes, but some will welcome the leavening effect it has on the movie’s more frightening aspects.

From The Wall Street Journal • Oct. 28, 2025

Seven years after her father’s disappearance, Diamond Newberry and her mother are struggling, but Diamond’s observations provide comic leavening.

From Los Angeles Times • May 15, 2024

But I do depart from my standard in one major way: Swirled brownies need leavening.

From Washington Post • Dec. 7, 2022

So, they have chosen the traditional path, using public filings to make their case — leavening the dense legal passages with explanations aimed at being more accessible to the public, officials said.

From New York Times • Aug. 31, 2022

From morning to night, he displayed cool and reasoned leadership, with his humor leavening even the most difficult crisis.

From "Long Walk to Freedom" by Nelson Mandela