ἀντίπτωσις
From LSJ
οὐκ ἔστιν οὐδείς, οὐδ' ὁ Μυσῶν ἔσχατος → there is nobody, not even the last of the Mysians | there is nobody, not even the meanest of mankind
English (LSJ)
εως, ἡ,
A opposition, resistance, Hp.Decent.3 (pl.). II Gramm., interchange of cases, Priscian. Inst.17.155, Sch.Ar.V.135.
German (Pape)
[Seite 260] ἡ, Gegenfall, bei den Gramm. Setzung eines Casus anstatt eines anderen.
Greek (Liddell-Scott)
ἀντίπτωσις: -εως, ἡ, τὸ πίπτειν ἐναντίον τινός, ἀντίστασις, Ἱππ. 22. 48. ΙΙ. παρὰ γραμμ., ἐναλλαγὴ πτώσεων, Σχόλ. εἰς Εὐρ. Ὀρ. 140.