εἰ γάρ κεν καὶ σμικρὸν ἐπὶ σμικρῷ καταθεῖο καὶ θαμὰ τοῦτ᾽ ἔρδοις, τάχα κεν μέγα καὶ τὸ γένοιτο → for if you add only a little to a little and do this often, soon that little will become great (Hesiod W&D, 361-362)
ἀνομβρήεις, βροχικός, δίομβρος, ἔνυγρος, ἐνυδρίας, ἔνυδρος, ἐξυδρίας, ἐπίβροχος, ἐπόμβριος, ἔφυδρος, κατόμβριμος, κάτομβρος, νότινος, νότιος, ὀμβρήρης, ὀμβρηρός, ὄμβριος, ὀμβρῶδες, ὀμβρώδης, ὑγρός, ὑέτιος, ὑετόεις, ὑετῶδες, ὑετώδης