subintroductae

The Agapetae are sometimes confounded with the subintroductae, or woman who lived with clerics without marriage, a class against which the third canon of the Council of Nice (325) was directed.

The Catholic Encyclopedia, Volume 1: Aachen-Assize 1840-1916 1913

[2205] On the subject of the subintroductae or suneisaktoi, one of the greatest difficulties and scandals of the early church, vide the article of Can.

NPNF2-08. Basil: Letters and Select Works 1895

His companions, though not averse to convivial indulgences, were of habits and tastes too intellectual for mere vulgar debauchery; and, with respect to the alleged “harams,” it appears certain that one or two suspected “subintroductae” (as the ancient monks of the abbey would have styled them), and those, too, among the ordinary menials of the establishment, were all that even scandal itself could ever fix upon to warrant such an assumption.

Life of Lord Byron Moore, Thomas, 1779-1852 1854

[351] St. Chrysostom "attacked in the first instance those ecclesiastics who, under pretence of charity, lived with virgins, whom they treated as adopted sisters, who they called ` subintroductae 'or adelphai agapetai.

NPNF1-12. Saint Chrysostom: Homilies on the Epistles of Paul to the Corinthians Editor 1889