Ghulat (; lit. "extremists", the adjectival form of ghuluww), is a term used in the theology of Shia Islam to describe some minority Muslim groups who either ascribe divine characteristics to figures of Islamic history (usually a member of Muhammad's family (Ahl al-Bayt)) or hold beliefs deemed deviant by mainstream Shi'i theology. In later periods, this term was used to describe any Shi'i group not accepted by the Zaydis, orthodox Twelvers, and sometimes the Ismailis.