The antonyms for the phrase "cleans on" are relatively simple. They essentially revolve around the opposite of cleaning or something that creates a mess. Words that could act as antonyms for "cleans on" include "dirties up," "pollutes," "stains," and "smudges." Each of these antonyms suggests a process that creates a mess or dirt rather than something that cleans things up. For example, "dirties up" implies that something is made unclean, while "pollutes" suggests that something is contaminated, and "stains" implies that something is colored or filled with a difficult-to-remove substance. These antonyms help to provide context and contrast to the phrase "cleans on" and offer a more complete understanding of the meaning of the phrase.