dictamen
From LSJ
νᾶφε καὶ μέμνασ' ἀπιστεῖν → keep a clear head and remember not to believe a thing (Epicharmus fr. 250)
Latin > English (Lewis & Short)
dictāmen: inis, n. dicto, late Lat. for dictum, praescriptum, praeceptum.
Latin > French (Gaffiot 2016)
dictāmĕn, inis, n., action de dicter : CIL 8, 5530.