Yeasty is an adjective that refers to anything containing or resembling yeast. Some synonyms for yeasty include foamy, frothy, bubbly, fermenting, and effervescing. Other synonyms that can be used to describe yeast include puffy, fluffy, light, airy, and spongy. Yeast is often used in the production of bread, beer, and other alcoholic beverages, and synonyms for the word yeasty can be used to describe the properties of these products. Yeast is also used in medicine to treat certain infections, and synonyms for yeasty can be used to describe the characteristics of these medications. Overall, synonyms for yeasty include words that imply fermentation, lightness, and airiness.