'Mischievous' in the Bible

Is there wrong in my tongue? cannot my taste discern mischievous things?

For they intended evil against thee; they imagined a mischievous device, which they could not execute.

Rest in Jehovah, and wait patiently for him: fret not thyself because of him that prospereth in his way, because of the man that bringeth mischievous devices to pass.

And they that seek after my life lay snares for me; and they that seek my hurt speak mischievous things, and meditate deceits all the day long.

Thy tongue deviseth mischievous things, like a sharp razor, practising deceit.

A good man obtaineth favour of Jehovah; but a man of mischievous devices will he condemn.

He that is soon angry dealeth foolishly, and a man of mischievous devices is hated.

The evil-doer giveth heed to iniquitous lips; the liar giveth ear to a mischievous tongue.

The beginning of the words of his mouth is folly; and the end of his talk is mischievous madness.