The term "clean act" refers to an action that is free from contamination, dirt or impurities. It is an act that is morally pure and honest. The antonyms for "clean act" include words like: dirty, impure, corrupt, fraudulent, dishonest, tainted, polluted and contaminated. These words denote actions that are harmful, deceitful and dishonest. They are acts that lack integrity and violate moral principles. A corrupt act is an antonym of the clean act as it involves bribery, lies and deceit. A fraudulent act is another antonym for the clean act as it involves cheating and dishonesty. Therefore, it is essential to uphold the values of integrity and honesty by avoiding these antonyms to the clean act.