כָּפַר

From LSJ

δι' ἐμοῦ βασιλεῖς βασιλεύουσιν, καὶ οἱ δυνάσται γράφουσιν δικαιοσύνην → through me kings rule, and princes dictate justice (Proverbs 8:15, LXX version)

Source

English (Strong)

a primitive root; to cover (specifically with bitumen); figuratively, to expiate or condone, to placate or cancel: appease, make (an atonement, cleanse, disannul, forgive, be merciful, pacify, pardon, purge (away), put off, (make) reconcile(-liation).