Verses with the word frowardness in the Old Testament (3 verses):

Proverbs 2:14
Who rejoice to do evil, and delight in the frowardness of the wicked;

Proverbs 6:14
Frowardness is in his heart, he deviseth mischief continually; he soweth discord.

Proverbs 10:32
The lips of the righteous know what is acceptable: but the mouth of the wicked speaketh frowardness.