The phrase "becomes invisible" can be replaced by several synonyms, including vanishes, fades away, disappears, evaporates, and dematerializes. These words suggest the disappearance or disappearance of an object, person, or visibility. Similarly, words like elusive and untraceable suggest that something or someone cannot be easily found even if it is not invisible. Some other synonyms such as camouflages, disguises, and blends in suggest the idea of something becoming invisible by changing its appearance to blend in with its surroundings. These synonyms are useful for writers who need to avoid repetition and create precision in their language.