ἀναγραμματίζω
From LSJ
English (LSJ)
A write the letters of a name in direct and then in reverse order, PMag.Leid.W.3.21 (Pass.), al. II transpose the letters of one word so as to form another, Eust.46.2, 488.12 (Pass.); e. g. Ἥρα ἀήρ, ἀρετή ἐρατή, Ἀρσινόη ἴον Ἥρας, Πτολεμαῖος ἀπὸ μέλιτος.