Dictionary entry

ἀποκαθίστημι

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ἀπο-καθ-ίστημι (ἀποκαθιστάω, Mk 9:12, Rec., -ιστάνω, LTTr.; cf. Ac 1:6; -κατιστάνω, WH),

[in LXX chiefly for שׁוּב;]

1. to restore, i.e. to a former condition: of health, Mt 12:13, Mk 3:58:25, Lk 6:10; of social or political affairs, Mt 17:11, Mk 9:12, Ac 1:6.

2. to give back, bring back: He 13:19 (so in π., MM, s.v.; cf. also Cremer, 312).†