ἐξυπτιάζω
From LSJ
οὕτως εἴη ἡμίν ὁ Θεός βοηθός καὶ τὸ ἱερὸν Αὐτοῦ Εὐαγγέλιον ὧδε ἐμφανισθέντα-ὁρκισθέντα → so help us God and Ηis holy Gospel the things here declared and sworn
English (LSJ)
A turn a person quite on the back, ὄμμα (ὄνομα codd.) throw his eyes upwards or backwards, A.Th.577; ἐ. ἑαυτόν throwing back his head haughtily, Luc.Cat.16: abs., Id.Gall.12, Herc.3, Ind.21:— Med., ἐξυπτιάζεσθαι τὴν κεφαλήν throw it back, Arist.Fr.106. II intr., lie back, of the horns of wild cattle, Id.HA499a7.