opero
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
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.
Latin > English
opero operare, operavi, operatus V :: work
opero opero operare, operavi, operatus V :: operate (math.)