μονογέρων
From LSJ
τὸ δὲ ποιεῖν ἄνευ νοῦ ἃ δοκεῖ καὶ σὺ ὁμολογεῖς κακὸν εἶναι: ἢ οὔ → but doing what one thinks fit without intelligence is—as you yourself admit, do you not?—an evil
English (LSJ)
οντος, ὁ,
A misanthropic old man, Com.Adesp.1083.
German (Pape)
[Seite 202] οντος, ὁ, ein einsamer, mürrischer Alter, B. A. 51.
Greek (Liddell-Scott)
μονογέρων: -οντος, ὁ, μονότροπος καὶ δύσκολος γέρων, Α. Β 51. 20.