The phrase "made plausible" refers to the act of presenting an argument or idea in a convincing manner. Other synonymous phrases for "made plausible" include "made believable," "made credible," "made reasonable," and "made convincing." These phrases all convey the idea that an argument or idea has been presented in a way that is persuasive and logical, making it more likely to be accepted by an audience. Using synonyms for "made plausible" can help to vary language and avoid repetition in writing or speaking, while conveying the same underlying meaning.