λέγεις, ἃ δὲ λέγεις ἕνεκα τοῦ λαβεῖν λέγεις → you speak, but you say what you say for the sake of gain (Menander, fr. 776)
ἄγνωστος, ἀπόκρυφος, ἀσυμφανής, ἀπόρρητος, ἀγνωστί, ἐγκεκαλυμμένως