Debunking is the process of exposing false beliefs or myths. Someone who debunks is often referred to as a "debunker." However, there are several other synonyms that can be used instead of "debunker." One could use the term "skeptic," which refers to a person who questions the validity of claims and is unwilling to accept them without solid evidence. Another synonym is "doubter," which indicates someone who is unsure about the truthfulness of statements. A "disprover" is another term that can be used to describe someone who demonstrates the falsehood of an idea or belief. Finally, the term "myth buster" is often used to refer to someone who seeks to break down and debunk popular myths and misconceptions.