The phrase "clean forgot" means to have forgotten something completely or entirely. It is often used to emphasize the completeness of the forgetfulness. When looking for antonyms or opposite words to describe this phrase, we could use words such as remember, recollect, recognize, keep in mind, recall, retain, and not forget. These words convey the opposite meaning of not forgetting and keeping something in the forefront of the mind. It is important to remember to use these words in context to ensure clarity and avoid confusion. Overall, using antonyms for "clean forgot" can help to enhance our communication and understanding of the English language.