ἀνεπηρεαστικός

From LSJ

μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides

Source

Spanish (DGE)

-όν
libre de molestias δός μοι τὴν πρός σε ὁδὸν ἀνύβριστον καὶ ἀ. Ephr.Syr.1.257B.