To leaven the serious tone, Gibney makes liberal use of catchy graphics and music.
From the bloomberg.com
We now sell our leaven to a non-Jewish person for the eight days of Passover.
From the post-gazette.com
The program became inundated with sentiment, and it did little to leaven that tide.
From the en.wikipedia.org
There's real crunch and grip to the tannins, and freshness too, to leaven the power.
From the guardian.co.uk
The league hasn't decided what it wants to use to leaven the season to an extra week.
From the washingtonpost.com
Hansen is hard on players but also knows how to leaven that with downtime.
From the nzherald.co.nz
All through the play, the actors leaven the drama with lovely moments of black comedy.
From the washingtonpost.com
His popular essays and book reviews leaven economic analysis with a dry, cutting wit.
From the time.com
Clark carries it off in smart style, with a touch of humor to leaven the vocal drama.
From the stltoday.com
More examples
A substance used to produce fermentation in dough or a liquid
Raise: cause to puff up with a leaven; "unleavened bread"
An influence that works subtly to lighten or modify something; "his sermons benefited from a leavening of humor"
A leavening agent (also leavening or leaven) is any one of a number of substances used in doughs and batters that cause a foaming action which lightens and softens the finished product. ...
The Parable of the Leaven is a short parable told by Jesus in the New Testament, found in the Gospels of Matthew and Luke . In both places it immediately follows the Parable of the Mustard Seed, which shares this parable's theme of the Kingdom of Heaven growing from small beginnings.
Any agent used to make dough rise or to have a similar effect on baked goods; To add a leavening agent; To cause to rise by fermentation; To temper an action or decision
Yeast: also the process of whipping egg whites that produces air bubbles and causes the rising of baked items
To add an ingredient, such as yeast, baking powder or baking soda, that adds gas to a dough or batter, causing it to expand, or rise, and lighten the texture of the finished product.
To use a substance such as baking powder, baking soda or yeast to create the formation of gases within a mixture so that it rises up, resulting in a lighter texture and increased volume when cooked.