The Reverend is an honorific style most often placed before the names of Christian clergy and ministers. There are sometimes differences in the way the style is used in different countries, the Reverend is correctly called a style but is often and in some dictionaries called a title, form of address or title of respect. The style is sometimes used by leaders in non-Christian religions such as Judaism and Buddhism. The term is an anglicisation of the Latin reverendus, the originally used in Latin documents in medieval Europe. It is the gerundive or future passive participle of the verb revereri, the Reverend is therefore equivalent to The Honourable or The Venerable. In traditional and formal English usage, both British and American, it is considered incorrect to drop the definite article, the. In practice, the is not used in both written and spoken English. When the style is used within a sentence, the is correctly in lower-case, the usual abbreviations for Reverend are Rev. Revd and Revd. The Reverend is traditionally used as a form with first names and surname.
Use of the prefix with the surname alone is considered a solecism in traditional usage, in some countries, especially Britain, Anglican clergy are acceptably addressed by the title of their office, such as Vicar, Rector, or Archdeacon. This has traditionally been considered grammatically incorrect on the basis that it is equivalent to referring to a judge as being an honourable or a man as being a mister. It is likewise incorrect to form the plural Reverends, in some churches, especially Protestant churches in the United States, ordained ministers are often addressed as Pastor. Pastor, however, is considered correct in some churches when the minister in question is the head of a church or congregation. Male Christian priests are addressed as Father or, for example. However, in correspondence, such priests are not normally referred to as Father John, Father Smith, or Father John Smith. Father as a title is used for Roman Catholic and Old Catholic priests. In England, even Roman Catholic priests were often referred to as Mr until the 20th century except when members of a religious order, Mr is still not incorrect for priests of the Church of England.
Some female Anglican or Old Catholic priests use the style The Reverend Mother and are addressed as Mother, the Reverend may be modified to reflect ecclesiastical standing and rank