The opposite of un-cleaner is cleaner. It refers to something that is free from dirt or impurities. It can also refer to a person or thing that is tidy, organized, and well-maintained. The antonyms of un-cleaner can also include spotless, hygienic, pristine, neat, and washed. These words signify the opposite of dirty, messy, and disorganized. Cleanliness is a desired trait in both personal and professional settings. It not only contributes to a healthy environment but also creates a positive impression. Therefore, it's essential to maintain cleanliness and hygiene in every aspect of life.