There aren't many synonyms for the word "uncharnel," as it's a fairly uncommon term. However, some words that may serve as substitutes include "disinter," "exhume," "dig up," "unearth," or "unbury." These words all relate to the process of removing a body or remains from a burial place, and they can be used interchangeably with "uncharnel" to describe such a situation. While "uncharnel" may not be a commonly used word in everyday conversations, it can often be found in literature or historical texts where the removal of remains is a relevant topic.