עֹז
From LSJ
ἡ ὑπόστασίς μου ὡσεὶ οὐθὲν ἐνώπιόν σου → my life is as nothing in respect to you, my life is nothing in thy reckoning
English (Strong)
or (fully) rowz; from עָזַז; strength in various applications (force, security, majesty, praise): boldness, loud, might, power, strength, strong.