Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
εξέπιεσ you drank LXX.Isa.51.17
εκπίονται they shall drink LXX.Zech.9.15
εκπίνει drinks up LXX.Job.6.4

Liddell-Scott-Jones

ἐκπίνω (ekpinō) to drink up G:V

ἐκπίνω [],

future -πίομαι[Refs 5th c.BC+], -πιοῦμαι [Refs 4th c.BC+]:— drink out or off, quaff liquor, [Refs 8th c.BC+], in Epic dialect aorist, [ποτὸν] ἔκπῐεν [Refs]: perfect passive, ὅσσα τοι ἐκπέποται [Refs 5th c.BC+]; also of bugs, ticks, and the like, drain, τὴν ψυχὴν . [Refs 5th c.BC+]:—passive, σῶμα..ἐξεπόθη [Refs]

__2 drain a cup dry, πλῆρες . κέρας [Refs 5th c.BC+]; μὴ 'κπιεῖν ἀλλ᾽ μίαν (i.e. κύλικα) [Refs 5th c.BC+]
__3 metaphorically, . ὄλβον [Refs 5th c.BC+]
__4 passive, to be absorbed, [Refs 5th c.BC+]