What are the opposite words for un-adulterated?

The word "un-adulterated" means pure, uncorrupted, or genuine. Therefore, its antonyms would be impure, corrupted, false, or fake. Anything that is not pure or genuine would be described as un-unadulterated. For example, fake news is un-adulterated, but genuine stories are un-unadulterated. Similarly, synthetic materials are un-adulterated, but natural fibers are un-unadulterated. Dishonesty, deceit, and impurity are all antonyms to un-adulterated. Hence, it is crucial to use the right language while expressing one's thoughts to avoid misinterpretation.

Antonym of the day

most knee-slapper
boring, common, dramatic.