craftily
From LSJ
Ὦ τύμβος, ὦ νυμφεῖον, ὦ κατασκαφὴς οἴκησις αἰείφρουρος, οἷ πορεύομαι πρὸς τοὺς ἐμαυτῆς → Tomb, bridal chamber, eternal prison in the caverned rock, whither I go to find mine own.
Ar. and V. δόλῳ, V. ἐν δόλῳ, δόλοις, σὺν δόλῳ, P. πανούργως.
by treachery: P. ἐξ ἐπιβουλῆς, V. μεμηχανημένως.