ὠκύμορος
From LSJ
γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
English (LSJ)
ον,
A quickly dying, dying early, of Achilles, Il.1.417, 18.95, 458; ὠκυμορώτατος ἄλλων 1.505; of the suitors, Od.1.266, al.; of φιτρός of Meleager, B.5.141; in Epitaphs, Epigr.Gr.527 (Beroea), 540 (Thrace), al.; so in later Prose, Ph.2.45; of flowers, Philostr.Ep.4: of things, transient, J.AJ11.3.6, Ph.1.478: neut. pl. as Adv., Supp.Epigr.6.501 (Isaura). II Act., bringing a quick or early death, ἰοί Il.15.441, Od.22.75; φαρμάκων δυνάμεις Plu.Ant.71; κώνειον -ώτατον Id.Dio58.