The phrase "religious outcast" can have a negative connotation, as it implies someone who has been excluded or shunned by their religious community. There are several synonyms that can be used to describe someone in this position, including pariah, heretic, apostate, blasphemer, and nonconformist. A pariah is someone who has been rejected by society, while a heretic is someone who holds beliefs that are contrary to established religious doctrine. An apostate is someone who has renounced their religion, while a blasphemer is someone who has shown disrespect towards a sacred object or person. Finally, a nonconformist is someone who does not follow the traditional beliefs or practices of their religion.