"Conventicles" is a term that refers to secret or unauthorized religious gatherings. There are several synonyms for this word, including "clandestine meetings," "unlawful assemblies," "underground gatherings," and "covert services." Other synonyms include "sectarian meetings," "insurgent religious gatherings," and "clandestine worship." Each of these terms implies a sense of secrecy and unlawful behavior that is associated with these kinds of gatherings. Regardless of the specific synonym used, the term "conventicles" applies to gatherings that are unapproved by the authorities and often held in secret, out of fear of persecution or punishment.