The phrase "making believer" typically refers to the act of convincing someone to have faith in something or someone. Antonyms for this term could include phrases such as "doubting Thomas," "skeptical," or "unconvinced." Other related terms might include "disbelieving," "unbelieving," or "cynical." These words suggest a lack of faith or trust in a particular idea, belief, or person. In some cases, the opposite of "making believer" might involve actively working to dissuade someone from a particular belief or ideology, whether through argumentation, coercion, or other means. Whatever the context, the antonyms of "making believer" point to a fundamental opposition to the act of persuasion and the formation of religious or ideological convictions.