Yeastiest, an adjective used to describe the most yeasty flavor or aroma, has many antonyms. Some antonyms include blandest, tasteless, odorless, inedible, and unsavory. These words describe food or drinks that lack flavor or aroma, are unappetizing, or have no yeast in them. Blandest means dull or lacking in taste, while tasteless refers to the absence of any distinctive taste. Odorless means having no smell, inedible means not fit for consumption, and unsavory means distasteful or unpleasant. These antonyms are often used to describe foods, beverages, or cooking that lacks the characteristic yeasty flavor or aroma, making them less desirable.