Unmixed is a term that describes something that is in a pure or undiluted form. When looking for antonyms for this word, we can consider adjectives that describe the opposite. Some examples of antonyms for "ummixed" are diluted, impure, adulterated, contaminated, unrefined, or mixed. These words are often used to describe substances that have been combined with other ingredients or have undergone some form of alteration. For instance, a pure and unmixed drink may refer to a drink that has not had any syrup, sugar, or other additives added to it. Antonyms of unmixed encompass elements that have undergone some form of adulteration or dilution, rendering its purity questionable.