The term "Bible-thumper" is often used in a derogatory manner to describe someone who is overly religious or preaches their beliefs in a forceful way. Alternative synonyms that can be used include "religious fanatic", "evangelist", "preacher", "theologian", or "zealot". These words have varying connotations, but all refer to individuals who are passionate about their religious beliefs. However, it is important to note that using these terms in a pejorative manner can be hurtful and disrespectful. It is important to respect individuals' beliefs and to engage in dialogue that is constructive and respectful.