Clean up is a term used to describe the process of tidying up and making a space or object clean. However, there are numerous synonyms that can be used in place of clean up, which can add variety and nuance to your writing or speech. Some synonyms include tidy up, organize, declutter, spruce up, scrub, sanitize, purify, and sterilize. Each of these words has a slightly different connotation, with tidy up implying a general straightening, declutter addressing excess items, and sanitize focusing on removing germs and bacteria. No matter which synonym you choose, using these variations can elevate your language and make your writing or speech more engaging and interesting.