cult

noun

• 1a system of religious veneration and devotion directed towards a particular figure or object:the cult of St Olaf
• a relatively small group of people having religious beliefs or practices regarded by others as strange or as imposing excessive control over members:a network of Satan-worshipping cults
• a misplaced or excessive admiration for a particular thing:the cult of the pursuit of money as an end in itself

• 2a person or thing that is popular or fashionable among a particular group or section of society:the series has become a bit of a cult in the UK [as modifier]:a cult film