ἐπινήχομαι
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
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.