deceptio
From LSJ
ἐν πιθήκοις ὄντα δεῖ εἶναι πίθηκον → in Rome we do as the Romans do | when in Rome, do as the Romans do | when in Rome, do as the Romans | when in Rome, do like the Romans do | when in Rome | being among monkeys one has to be a monkey
Latin > English (Lewis & Short)
dēceptio: ōnis, f. decipio,
I a deceiving, deception (late Lat.), Mart. Cap. 4 fin. al.; Cod. 11, 47, 6; Vulg. 1. Macc. 16, 17.—
II Deceitfulness: vitae, Vulg. Sap. 14, 21: divitiarum, id. Marc. 4, 19.
Latin > French (Gaffiot 2016)
dēceptĭō, ōnis, f. (decipio), déception, tromperie : Aug. Civ. 22, 22.