TBM

TBM is a shorthand term for a member of the Church of Jesus Christ of Latter-day Saints (LDS) who follows church teachings closely and embraces its doctrines without much skepticism. The term originated in online forums and early message boards in the late 1990s and early 2000s, coined mainly by ex-Mormon (exmo) and questioning-Mormon communities as a quick way to talk about faithful members in discussions about belief and culture.

People who use "TBM" today are typically part of LDS-adjacent online spaces, such as exmo communities, religious discussion forums, and social media groups, where faith transitions or cultural observations are common topics. It isn't inherently an insult; it's more of a descriptive label that people often use playfully, and sometimes even affectionately, to describe someone who's all-in on church life, from Sunday services to cultural norms. However, some people may not appreciate the label.