κατ' ἄντρ' ἃ πόντος νοτίδι διακλύζει μέλας

From LSJ

διὰ τῆς σιωπῆς πικρότερον κατηγορεῖ → through silence you accuse yourself more harshly (Menander)

Source

English > Greek (Woodhouse Quotes Reversed)

in caverns which the dark sea washes with its waves