1. the quality or state of being yeasty; having the characteristics of yeast
2. a foamy, frothy, or bubbly quality
3. restless energy or agitation; turbulence
Usage: figurative

Examples

• The bread dough showed signs of yeastiness as it began to rise.
• She could smell the yeastiness of the fermenting beer.
• The yeastiness of the champagne created a pleasant fizz.
• There was a certain yeastiness in the air of the bakery.
• The political climate had a yeastiness that made everyone nervous.
• The yeastiness of the crowd suggested trouble was brewing.