There are several synonyms for the phrase "making muck of," which means to ruin or mess up something. Some alternative expressions include "botching," "butchering," "mangling," "spoiling," "wrecking," and "fouling up." Other similar phrases include "making a mess of," "mismanaging," "bungling," and "mishandling." These synonyms are useful when trying to convey the idea of someone or something causing damage or ruining a situation due to incompetence or lack of skill. Whether it's a project at work, a personal relationship, or even a recipe in the kitchen, there are many ways to describe the act of making a mess of things.