Antonyms for "makes plausible" include "debunks," "disproves," "refutes," "repudiates," "undermines," and "discredits." These words carry the opposite meaning of "makes plausible," by implying that the idea or argument being presented is either false, invalid or lacks credibility. These antonyms are commonly used in academic research, journalistic investigations, and legal proceedings, where the accuracy and validity of information presented are crucial. By using antonyms to "makes plausible," one can provide a broader and more nuanced understanding of the various possibilities in a given argument or debate. In this way, these antonyms add to intellectual discourse, promote critical thinking, and help establish truth and clarity.