βορβόρῳ δ' ὕδωρ λαμπρὸν μιαίνων οὔποθ' εὑρήσεις ποτόν → once limpid waters are stained with mud, you'll never find a drink
βαδίζω, βηματίζω, βιβάσθω, βιβάω, βαίνω