ἀπιστητέον
From LSJ
Ἤθη πονηρὰ τὴν φύσιν διαστρέφει → Bonae indolis venena sunt mores mali → Verdorbne Sitten sind verderblich der Natur
English (LSJ)
A one must mistrust, disbelieve, c. dat., Plb.4.41.8; of persons, Str.8.4.10, etc.; ἀ. ἡμῖν περί . . Hp.Cord.2.
Greek (Liddell-Scott)
ἀπιστητέον: ῥημ. ἐπίθ. τοῦ ἀπιστῶ, δεῖ ἀπιστεῖν, πρέπει τις νὰ ἀπιστῇ ἢ νὰ δυσπιστῇ, μετὰ δοτ., Πολύβ. 4. 41, 8, Στράβ. 362.
Spanish (DGE)
no hay que creer, hay que desconfiar c. dat. de cosa τῷ μεγέθει ... τῷ πλήθει Plb.4.41.8
•c. dat. de pers. ἡμῖν περί ... Hp.Cord.2, τῷ φήσαντι Str.8.4.10.