εὐχαριστέω

A. bestow a favour on, oblige, τῷ δήμῳ τῷ Δηλίων IG 11 (4).665 (Delos, iii B.C.); τινι PPetr. 2p.4 (iii B.C.), PHib. 1.66.5 (iii B.C.).

2. to be thankful, return thanks, Decr. ap. D. 18.92, IPE 12.352.14 (Chersonesus, ii B.C.); τοῖς Ἀθηναίοις Posidon. 36 J., cf. Phld. Ir. p.92 W., al.; ἐπί τινι or περί τινος for a thing, Plb. 4.72.7, D.S. 16.11, etc.; esp. to the gods, ἐπὶ τῷ ἐρρῶσθαί σε τοῖς θεοῖς εὐ. UPZ 59.10 (ii B.C.), cf. LXX Ju. 8.25, 1 Ep.Cor. 1.4, etc.:—Pass., to be thanked, ηὐχαρίστηται κεραυνοῖς Hp. Ep. 17; to be received with thanks, 2 Ep.Cor. 1.11.

3. pray, τῷ θεῷ περί τινος PLond. 2.413,418 (iv A.D.).