opero
From LSJ
τῶν δ᾽ ὀρθουμένων σῴζει τὰ πολλὰ σώμαθ᾽ ἡ πειθαρχία → But of those who make it through, following orders is what saves most of their lives (Sophocles, Antigone 675f.)
Latin > English (Lewis & Short)
ŏpĕro: āvi, 1, v. a., post-class. collat. form of operor, q. v.
Latin > French (Gaffiot 2016)
ŏpĕrō, āvī, ātum, āre, c. operor : Cassiod. Hist. eccl. 10, 33.
Latin > German (Georges)
opero, āvī, ātum, āre, ins Werk setzen, bereiten, Cassiod. hist. eccl. 10, 33. Commodian. instr. 1, 30, 14. Chalcid. Tim. 238: Partiz. operātus, Tert. de praescr. haer. 29. Lact. 7, 27, 4.