cult

noun

1.
followers of an exclusive system of beliefs and practices
Derived from:
cultist
2.
an interest followed with exaggerated zeal
3.
followers of an unorthodox, extremist, or false religion or sect who often live outside of conventional society under the direction of a charismatic leader
Derived from:
cultist
4.
a religion or sect that is generally considered to be unorthodox, extremist, or false
Derived from:
cultist
5.
a system of religious beliefs and rituals
Derived from:
cultist