What is define cult?

A cult is a group of people who hold extreme or non-mainstream beliefs, typically centered around a single charismatic leader. Often, cults use manipulative tactics to recruit new members and maintain control over existing ones. Cults can vary in size and intensity, from small groups focused on spiritual or religious practices to large, sprawling organizations with a significant political or social impact. Whether positive or negative, cults tend to be highly insulated from mainstream society, with their own internal language, customs, and practices. The word "cult" can carry negative connotations, but not all cults are necessarily harmful or abusive.