When we talk about a chaotic scene, we usually relate it to a scenario which is confusing, disorganized or unruly. There are various synonyms that can be used as a replacement for the word chaotic scene. The word "mess" denotes something that is untidy, while "anarchy" connotes a lack of order. "Pandemonium" can be used for a situation where there is complete chaos and noise. "Mayhem" refers to a violent and chaotic situation. "Tumult" is used to describe a loud and disorderly scene. Whereas, "bedlam" and "madhouse" denote a scene of total chaos and confusion. Using these words instead of "chaotic scene" can help you describe the situation in a more descriptive and vivid way.