שָׂמַח

From LSJ

Ζήσεις βίον κράτιστον, ἢν θυμοῦ κρατῇς → Vives bene, si sis vacuus iracundia → Am besten lebst du, wenn du deinen Zorn beherrschst

Menander, Monostichoi, 186

English (Strong)

a primitive root; probably to brighten up, i.e. (figuratively) be (causatively, make) blithe or gleesome: cheer up, be (make) glad, (have, make) joy(-ful), be (make) merry, (cause to, make to) rejoice, X very.