copulatum
From LSJ
σιγᾶν ἄμεινον ἢ λαλεῖν ἃ μὴ πρέπει → it's better to keep silence than to say what's not appropriate (Menander)
cōpŭlātum, ī, n. (copulatus), c. conjunctum : Gell. 16, 8, 10.
copulatum copulati N N :: joint sentence; (also called conjunctum)