The word be-fouls means to make something dirty or contaminated. Some antonyms for be-fouls include clean, purify, sanitize, decontaminate, and sterilize. These words refer to the opposite of be-fouls which is removing dirt, germs, and bacteria from something. Clean is the most basic antonym for be-fouls, and it means to remove dirt or stains from something. Purify refers to removing impurities from something, and sanitize means to clean or disinfect something thoroughly. Decontaminate is a more intense antonym for be-fouls, it refers to removing harmful substances or chemicals from surfaces. Meanwhile, sterilize means to kill all microorganisms and bacteria from something.