The New Testament apocrypha (singular apocryphon) are a number of writings by early Christians that give accounts of Jesus and his teachings, the nature of God, or the teachings of his apostles and of their lives. Some of these writings were cited as scripture by early Christians, but since the fifth century a widespread consensus has emerged limiting the New Testament to the 27 books of the modern canon. Roman Catholic, Eastern Orthodox, and Protestant churches generally do not view the New Testament apocrypha as part of the Bible.
The word "apocrypha" means "things put away" or "things hidden", originating from the Medieval Latin adjective apocryphus, "secret" or "non-canonical", which in turn originated from the Greek adjective ἀπόκρυφος (apokryphos), "obscure", from the verb ἀποκρύπτειν (apokryptein), "to hide away". From the Greek prefix "apo" which means "away" and the Greek verb "kryptein" which means "to hide".
The general term is usually applied to the books that were considered by the church as useful, but not divinely inspired. As such, to refer to Gnostic writings as "apocryphal" is misleading since they would not be classified in the same category by orthodox believers. Often used by the Greek Fathers was the term antilegomena, or "spoken against", although some canonical books were also spoken against, such as the Apocalypse of John in the East. Often used by scholars is the term pseudepigrapha, or "falsely inscribed" or "falsely attributed", in the sense that the writings were written by an anonymous author who appended the name of an apostle to his work, such as in the Gospel of Peter or The Æthiopic Apocalypse of Enoch: almost all books, in both Old and New Testaments, called "apocrypha" in the Protestant tradition are pseudepigrapha. In the Catholic and Orthodox traditions, what are called the apocrypha by Protestants include the deuterocanonical books: in the Catholic tradition, the term "apocrypha" is synonymous with what Protestants would call the pseudepigrapha, the latter term of which is almost exclusively used by scholars.