μονόπτωτος
From LSJ
καὶ λέγων ὅτι Πεπλήρωται ὁ καιρὸς καὶ ἤγγικεν ἡ βασιλεία τοῦ θεοῦ· μετανοεῖτε καὶ πιστεύετε ἐν τῷ εὐαγγελίῳ → declaring “The time has been accomplished and the kingdom of God is near: start repenting and believing in the gospel!” (Μark 1:15)
English (LSJ)
ον,
A with but one case, A.D.Synt.29.1, Porph.in Cat. 62.4.
German (Pape)
[Seite 204] mit einem Falle od. Casus, Gramm.
Greek (Liddell-Scott)
μονόπτωτος: -ον, ὁ ἔχων μίαν μόνον πτῶσιν, Χοιροβοσκ. 1. 370.