Yeastiness refers to the characteristic of having a yeasty taste or aroma. The antonyms for yeastiness are freshness, cleanness, and purity. Freshness refers to the quality of being recently made or harvested and not stale or spoiled. Cleanness refers to the absence of dirt, impurities, or contaminants. Purity refers to the quality or condition of being pure or uncontaminated. These antonyms are often used in describing food or drinks, especially beer or bread, where the absence of yeastiness is a desirable quality. Synonyms for yeastiness include doughy, yeasty, or bready flavors or aromas.