Cult

n.
  1. Attentive care; homage; worship.
  2. A system of religious belief and worship.
  3. A system of intense religious veneration of a particular person, idea, or object, especially one considered spurious or irrational by traditional religious bodies; as, the Moonie cult.
  4. The group of individuals who adhere to a cult (senses 2 or 3).
  5. A strong devotion or interest in a particular person, idea or thing without religious associations, or the people holding such an interest; as, the cult of James Dean; the cult of personality in totalitarian societies.