The phrase "in towering rage" can be replaced with a variety of synonyms depending on the context and tone of the text. Alternatives could include phrases such as "seething with anger," "furious," "livid," "enraged," "incensed," "irate," or "infuriated." Each synonym provides a different level of intensity and emotion to the text. For example, "seething with anger" implies a simmering, controlled rage, while "irate" suggests a more explosive, out-of-control anger. Choosing the appropriate synonym can help to convey the intended tone and mood of the text, and can make the writing more engaging and impactful.