The phrase "doeth something about it" can be replaced with a variety of synonyms, depending on the context and tone of the sentence. Some alternatives include "takes action," "addresses the issue," "resolves the problem," "fixes the problem," "handles the situation," "deals with it," "tackles the matter," "responds accordingly," "implements a solution," "renders assistance," "ameliorates the issue," and "instigates a remedy." These synonyms convey different degrees of urgency, assertiveness, and proactivity, and can help to enhance the clarity, specificity, and impact of the message being communicated. By choosing the most appropriate synonym, speakers and writers can effectively convey their intention and motivate others to follow through.