νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
swallow down: P. and V. καταπίνειν (Euripides, Cyclops; also Ar.) .
overwhelm with deluge: P. and V. κατακλύζω, κατακλύζειν.
