μονόπτωτος
From LSJ
καλῶς δρῶν ἐξαμαρτεῖν μᾶλλον ἢ νικᾶν κακῶς → I would prefer to fail with honor than to win by evil | I prefer to fail by acting rightly rather than win by acting wrongly | Better fail by doing right, than win by doing wrong (Sophocles, Philoctetes 95)
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.