μεταπλασμός
From LSJ
Οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → Silere non est turpe, sed frustra loqui → nicht Schweigen schändet, sondern Schwätzen auf gut Glück
English (LSJ)
ὁ, in Gramm.,
A metaplasm, the formation of cases of Nouns or tenses of Verbs from a non-existent nom. or pres., A.D.Adv.183.22 (pl.), Choerob. in Theod. 1.377, Arc. 129.9.