Catharist is a derived term of cathar.
As an adjective catharist
is relating to cathari and/or according to catharism.
As a noun cathar is
a member of certain so self-styled novatian and other christian sects embracing a form of dualism and extraordinary practices adhering to mary magdalene's teachings, persecuted by roman catholics as heretics.
Other Comparisons: What's the difference?
relating to Cathari and/or according to Catharism
A member of certain so self-styled Novatian and other Christian sects embracing a form of dualism and extraordinary practices adhering to Mary Magdalene's teachings, persecuted by Roman Catholics as heretics.
:The Albigenses, famous Cathars in and around Albi (southern France), were eradicated in a bloody ‘crusade’.
Most often used in the plural.
* Bogomil, Bogomile