εἰκοσέτης
From LSJ
τοῦ δὲ πολέμου οἱ καιροὶ οὐ μενετοί → in war, opportunities won't wait | the chances of war will not wait (Thucydides 1.142.2)
English (LSJ)
ον, ὁ,
A = εἰκοσαετής, BMus.Inscr.2.390 (Cypr.):—fem. εἰκοσ-ετίς, ίδος, ἡ, AP 7.166 (Diosc. or Nicarch.).
German (Pape)
[Seite 727] ὁ, zwanzigjährig, Anth. VIII, 123. Aber εἰκοσέτους σωθέντος Ὀδυσέος, nach zwanzig Jahren, Lucill. 12 (XI, 77).