εἰσερπύζω
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → But for extreme illnesses, extreme remedies, applied with severe exactitude, are the best (Hippocrates, Aphorism 6)
German (Pape)
[Seite 742] hineinkriechen, im aor., εἴς τι, Plut. Cleom. 8, wie Ael. H. A. 12, 32.