The Collaborative International Dictionary
Antilegomena \An`ti*le*gom"e*na\, n. pl. [NL., fr. Gr. ? against + ? to speak; part. pass. ?.] (Eccl.) Certain books of the New Testament which were for a time not universally received, but which are now considered canonical. These are the Epistle to the Hebrews, the Epistles of James and Jude, the second Epistle of Peter, the second and third Epistles of John, and the Revelation. The undisputed books are called the Homologoumena.
Wikipedia
Antilegomena, a direct transliteration of the Greek , refers to written texts whose authenticity or value is disputed.
Eusebius in his Church History (c. 325) used the term for those Christian scriptures that were "disputed," literally "spoken against," in Early Christianity before the closure of the New Testament canon. It is a matter of scientific discussion whether Eusebius divides his books into three groups of homologoumena ("accepted"), antilegomena, and heretical, or four by adding a notha ("spurious") group. The antilegomena or "disputed writings" were widely read in the Early Church and included the Epistle of James, the Epistle of Jude, 2 Peter, 2 and 3 John, the Book of Revelation, the Gospel of the Hebrews, the Epistle to the Hebrews, the Apocalypse of Peter (unique in being the only book never accepted as canonical which was commentated upon by a Church Father), the Acts of Paul, the Shepherd of Hermas, the Epistle of Barnabas and the Didache. The term "disputed" should therefore not be misunderstood to mean "false" or "heretical." There was disagreement in the Early Church on whether or not the respective texts deserved canonical status.