cult Definition

cult
noun

1a. A system of religious belief;
1b. The sect of people following such a system.

Thesaurus: sect, religion, denomination, school, faith, following.
2a. An unorthodox or false religion;
2b. The people adhering to such a system.
3. An especially extravagant admiration for a person, idea, etc.
4. Something which is popular and regarded as particularly significant by a certain group of people: a fashion, craze or fad.

Derivative: cultic
adj

Derivative: cultism
noun

Derivative: cultist
noun

Etymology: 17c: from Latin cultus worship, from colere to cultivate.