ἀπερίοδος
From LSJ
Ἀναβάντα γὰρ εἰς τὴν ἀκρόπολιν, καὶ διὰ τὴν ὑπερβολὴν τῆς λύπης προσκόψαντα τῷ ζῆν, ἑαυτὸν κατακρημνίσαι → For he ascended the acropolis and then, because he was disgusted with life by reason of his excessive grief, cast himself down the height
German (Pape)
[Seite 288] unperiodisch, λἐξις D. Hal. C. V. c. 23.
Greek (Liddell-Scott)
ἀπερίοδος: -ον, ὁ μὴ ἔχων περίοδον, ἀπερίοδον… λέξιν Διον. Ἁλ. περὶ Συνθέσ. 126.