ἐξακτέον
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.
English (LSJ)
(
A ἐξάγω 1.2) one must put out of the way, kill, αὑτόν M. Ant.3.1. 2 one must lead out, Aët.9.8. II (ἐξάγω 1.1b) one must march out, X.HG6.5.18.
Greek (Liddell-Scott)
ἐξακτέον: ῥηματ. ἐπίθ. (ἐξάγω Ι. 2) πρέπει τις νὰ ἐξαγάγῃ τινὰ ἐκ τοῦ μέσου, νὰ φονεύσῃ αὐτόν, Μάρκ. Ἀντ. 3. 1. 2) (ἐξάγω Ι. 1, β) πρέπει τις νὰ ἐξέλθῃ, ἔγνω ἐξακτέον εἶναι τὴν ταχίστην ἐκ τοῦ κόλπου Ξεν. Ἑλλην. 6. 5, 18.