ἀποχράομαι
From LSJ
ἐγώ εἰμι τὸ ἄλφα καὶ τὸ ὦ, ὁ πρῶτος καὶ ὁ ἔσχατος, ἡ ἀρχὴ καὶ τὸ τέλος → I am the Alpha and the Omega, the first and the last, the beginning and the end
Middle Liddell
B. to use to the full, c. dat. rei or absol., Thuc.
Lexicon Thucydideum
abuti, multum et libere uti, to misuse, make free and excessive use of, 1.68.4, [vulgo commonly ἐπιχρ.]. 6.17.1, 7.42.3,
conficere, interficere, to finish off, kill, 3.81.2, [vulgo commonly ἀπεχώρησαν].