hypocritical. impious, profane, godless,. or irreligious. Compare Isaiah 9:17 with Isaiah 33:14, the only other occurance in Isaiah.
Related Commentaries of Isaiah 10:6
Isaiah 10:6
6 I will send him against an hypocritical nation, and against the people of my wrath will I give him a charge, to take the spoil, and to take the prey, and to tread them down like the mire of the streets.