ὑπερευχαριστέω

English (LSJ)

to be extremely thankful, PTeb. 12.24 (ii B. C.).

Greek (Liddell-Scott)

ὑπερευχαριστέω: ὡς καὶ νῦν, εὐχαριστῶ παραπολύ, τινι Εὐσέβ. ΙΙ, 1509C.