A monk may be conveniently defined as a member of a community of men, leading a more or less contemplative life apart from the world, under the vows of poverty, chastity, and obedience, according to a rule characteristic of the particular order to which he belongs. The word monk is not itself a term commonly used in the official language of the Church. It is a popular rather than a scientific designation, but is at the same time very ancient, so much so that its origin cannot be precisely determined. So far as regards the English form of the word, that undoubtedly comes from the Anglo-Saxon munuc, which has in turn arisen from the Latin monachus, a mere transliteration of the Greek monachos. This Greek form is commonly believed to be connected with monos, lonely or single, and is suggestive of a life of solitude; but we cannot lose sight of the fact that the word mone, from a different root, seems to have been freely used, e.g. by Palladius, as well as monasterion, in the sense of a religious house (see Butler, "Palladius's Lausiac History" passim). Be this as it may, the Fathers of the fourth century are by no means agreed as to the etymological significance of monachus. St Jerome writes to Heliodorus (P.L., XXII, 350), "Interpret the name monk, it is thine own; what business hast thou in a crowd, thou who art solitary?" St. Augustine on the other hand fastens on the idea of unity (monas) and in his exposition of Psalm 82, extols the appropriateness of the words "Ecce quam bonum et quam jucundum habitare fratres in unum" when chanted in a monastery, because those who are monks should have but one heart and one soul (P.L., XXXVII, 1733). Cassian (P.L., XLIX, 1097) and Pseudo-Dionysius (De Eccl. Hier., vi) seem to have thought monks were so called because they were celibate.
In any case the fact remains that the word monachus in the fourth century was freely used of those consecrated to God, whether they lived as hermits or in communities. So again St. Benedict a little later (c. 535) states at the beginning of his rule that there are four kinds of monks (monachi):
HEIMBUCHER, Die Orden und Kongregationen (Paderborn, 1907 sqq.); HELYOT, Histoire des Ordres Religieux (Paris, 1743); SCHIEIETZ, Vorgesch. des Monchthums in the Archiv f. kath. Kirchenrecht (Mainz, 1898), 3 sqq. and 305 sqq.
APA citation. (1911). Monk. In The Catholic Encyclopedia. New York: Robert Appleton Company. http://www.newadvent.org/cathen/10487b.htm
MLA citation. "Monk." The Catholic Encyclopedia. Vol. 10. New York: Robert Appleton Company, 1911. <http://www.newadvent.org/cathen/10487b.htm>.
Transcription. This article was transcribed for New Advent by Barbara Jane Barrett.
Ecclesiastical approbation. Nihil Obstat. October 1, 1911. Remy Lafort, S.T.D., Censor. Imprimatur. +John Cardinal Farley, Archbishop of New York.
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