כָּסַף

From LSJ

Καλὸν τὸ καιροῦ παντὸς εἰδέναι μέτρον → Occasionis nosse res pulchra est modum → Schön ist's, das Maß zu kennen jeder rechten Zeit

Menander, Monostichoi, 273

English (Strong)

a primitive root; properly, to become pale, i.e. (by implication) to pine after; also to fear: (have) desire, be greedy, long, sore.