διαντλεῖν
From LSJ
ὁ φίλος ἐστὶν ἄλλος αὐτός → the friend is another self
Greek > English (Woodhouse Verbs Reversed)
(see also: διαντλῶ, διαντλέω) surmount, bear to the end, come to the end of, drain to the dregs, endure to the end, suffer to the end