ἐπινήχομαι
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
English (LSJ)
Dor.ἐπινεφελ-νάχ-[ᾱ],
A swim upon, πόντῳ Batr.107, cf.Cerc. 17.11; flow over, τοῖς πεδίοις Hdn.8.4.3; παιδὸς ἐπενάχετο φωνά floated on the stream, Theoc.23.61; float, ὑγρὸν -όμενον ταῖς κρήναις Dsc.1.73, cf. Sor.1.115, Alex.Aphr.Pr.1.22; opp. καταδύεσθαι, Gp. 7.8.2; of Noah, Ph.1.455; ἀέρι ib.602: metaph., ib.166, Dam.Pr. 270. 2. swim to or over to, c. acc., Call.Del.21. 3. swim against, attack, ἄλλῳ ἐ. ἄλλος πότμον ἄγων Opp.H.2.46.