arsis

τοῦ δὲ πολέμου οἱ καιροὶ οὐ μενετοί → in war, opportunities won't wait | the chances of war will not wait (Thucydides 1.142.2)

Latin > English (Lewis & Short)

arsis: is, f., = ἄρσις, in metre,
I the elevation of the voice; opp. thesis, depression (in pure Lat., sublatio, Diom. p. 471 P.), Mart. Cap. 9, p. 328; Don. p. 1738 P.; cf. Ter. Maur. p. 2412 P., and Mar. Vict. p. 2482 P.

arsis, is, f. (ἄρσις), temps levé de la mesure [opp. thesis ] : Prisc. Gramm. 3, 521, 25 K ; Capel. 9, 974.