Definition: The word "Arianizer" refers to someone who, in the context of Christianity, promotes a belief that some or all Jews are not true Christians due to their adherence to certain practices or beliefs which the Church finds incompatible with Jewish law and teachings. This can involve challenging certain aspects of Jewish tradition and belief systems, such as circumcision and the observance of Tannaitic ritual methods. The goal is often to reconcile these practices with Christian teachings in order for all Jews to fully understand Christianity's teachings.