'Mischievous' in the Bible

And those seeking my soul lay a snare, And those seeking my evil Have spoken mischievous things, And they do deceits meditate all the day.

An evil doer is attentive to lips of vanity, Falsehood is giving ear to a mischievous tongue.

The beginning of the words of his mouth is folly, And the latter end of his mouth Is mischievous madness.