The phrase "trample in the dust" implies a harsh and demeaning action. To convey similar meaning, synonyms like "suppress," "oppress," "humiliate," and "subjugate" could be used. Other substitutes for "trample" could be "crush," "squash," "overpower," or "annihilate," while "dust" could be replaced with "muck," "mire," or "filth." These words are often used to describe situations where one party is exerting their power over another, often in a violent or abusive manner. The context in which these synonyms are used should be carefully considered to ensure that the message is conveyed in the intended manner.