שָׁכַח

From LSJ

ἡγούμενος τῶν ἡδονῶν ἀλλ' οὐκ ἀγόμενος ὑπ' αὐτῶν → of his pleasures he was the master and not their servant

Source

English (Strong)

or shakeach; a primitive root; to mislay, i.e. to be oblivious of, from want of memory or attention: X at all, (cause to) forget.