ἀναδύνω
From LSJ
ο φίλος τον φίλον εν πόνοις και κινδύνοις ου λείπει → a friend does not abandon his friend in difficulties and in danger, a friend in need is a friend indeed
English (LSJ)
A come to the top of the water, Batr.90, Arist.Fr.335; of rivers which have disappeared into the earth, emerge, Id.Mete.356a25.
German (Pape)
[Seite 187] = folgd., Batrach. 91.