τοῦ δὲ πολέμου οἱ καιροὶ οὐ μενετοί → in war, opportunities won't wait | the chances of war will not wait (Thucydides 1.142.2)
adj.
P. and V. ὑγρός, διάβροχος, νοτερός (Eur., I.T. 1042), V. ὑδρηλός.