De-Protestantize refers to the process of diminishing or eliminating Protestant beliefs or practices. While there are no direct synonyms for this word, several alternative phrases could convey a similar meaning. One option might be "remove Protestant influence" or "undo Protestantization". Another phrase could be "de-Protestantification", which emphasizes the act of reversing a Protestant presence. Alternatively, one could employ "de-Protestanting" as a colloquial term to describe the process of reducing Protestant elements. While these phrases may not be direct synonyms, they effectively capture the essence of de-Protestantize and can be used interchangeably to describe actions linked to reducing Protestant influence or beliefs in a particular context.