efficiency
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
English > Greek (Woodhouse)
substantive
he impaired the efficiency of their navy: P. τὴν ἀκμὴν τοῦ ναυτικοῦ αὐτῶν ἀφείλετο (Thuc. 8, 46).